#bts mermaids | Explore Tumblr Posts and Blogs

angelicyoongie · 8 months

Text

The Obsidian Pearl (II)

— pairing: mermaid seokjin x (f) reader — word count: 8.1k — warnings: yandere, descriptions of death/blood/violence, explicit sexual content! dub-con touching/oral sex (f. receiving) - the smut is marked with * if you want to skip it — summary: Sailing through The Dead Man’s Passage is a death sentence and the whole crew knows it. But with the ship’s stocks dwindling fast, your captain is left with no other choice. When a haunting melody makes the crew jump ship one by one, you find yourself alone with the demon lurking in the murky red water. As the creature beckons you to jump into the icy ocean – “come to me, pet” – you find that you can’t do anything but obey.

Part 01 - 02

It's almost night when the siren, Seokjin, visits you again.

Enough time has passed for the air to turn chilly, carrying small gusts of wind that pass right through your clothes. The sunshine that warmed you only hours ago feels like it might never return, not when your surroundings are so terribly dark. You can feel the chill deep in your bones, fear nipping at your skin, clinging to you like frost on a dark winter night.

You're huddled as deep in the cave as you can go, hugging your knees to your chest. You're exhausted, eyes as dry as sand, but you know you can't rest. Call it instinct after being on the sea for so many years – of constantly being trapped on a vessel with people who might turn on you at any second – you tend to develop a hunch of when bad things are going to happen.

You can feel it in your body now, the low buzz that keeps you alert, reminding you that you are not safe no matter how tired you may be.

The reason for it comes only a few minutes later, a terrible scraping sound reverberating through the silence as something heavy is pushed up on the ledge of the stone dock. You free your stiff limbs, wincing as you whip around to face the source of it. It looks to be some sort of chest, the short distance and the faint moonlight not doing much for your vision.

As the item is pushed forward with another forceful shove, your heart jumps to your throat. You've seen this chest before – the iron insignia on the top is all too familiar to you. It belongs, no, belonged, to your captain. You don't dare to move closer though, not when there's only one creature who could've brought it to you.

Seokjin emerges from the water just seconds later, heaving himself up on the rock. He looks like something out of your worst nightmare, long hair covering his face as he claws his way forward. The shadows make him look all the more terrifying, the dark night blending together with his tail and hair like the perfect camouflage. If it wasn't for his strikingly pale skin, you never would've been able to make him out at all.

He settles back against the same rock as he did before, parting his hair to expose his face. Shivers run down your spine as Seokjin's black eyes find yours through the darkness. They strike just as much fear into you as they did last night, this morning, the emptiness just another reminder of how unearthly he really is.

It was foolish perhaps, but you had found yourself hoping that Seokjin had forgotten about you. That he had come across another ship to terrorize and another human to keep for his little experiments. You wouldn't have minded rotting away in the cave alone if it meant you never had to look upon him again.

The siren clicks his tongue. "I bring you a gift and you dare to look disappointed? This won't do. Come closer, little human."

You don't move, self-preservation rooting you to the ground.

"You humans freeze to death if you get too cold, do you not? Your skin is quite thin, fragile." Seokjin delivers his point by parting his mouth more than necessary, those horrible teeth coming to view behind his plush lips. "Your brain might be too small to remember but the water I dragged you out of was ice cold, pet. The air will only grow colder the longer you wait."

Seokjin doesn't have to use his thrall to make you understand that you have no choice in the matter. If you don't come forward willingly, he'll will either drag you there himself or let the elements do you in. The part of your brain that fears the unknown more than the creature in front of you, urges you to move.

You don't even have it in you to feel humiliated as you crawl forward, terror and cold stiff limbs making it impossible to walk. Seokjin's stare hangs over you like a heavy cloud, slowing you down even further.

He's close, way too close, as you kneel in front of the chest. You would be able to touch his stomach, feel where his skin transforms into scales if you just stretch your arm out.

Seokjin huffs as you linger, the sound making you jump as he impatiently says, "Go on."

You reach for the iron key that's miraculously still in the lock, your busted shoulder aching with pain as you have to twist it with more force than usual. A small stream of water is forced out, running down the side of the chest as you slowly open the lid with shaking hands. You've never held much gratitude for your captain, but for once, you can't be more thankful for his arrogance. He always left the key in the lock and never worried about a greedy crew, because, as he would always say; who in their right mind would dare to steal from a Captain?

You release a shuddering breath as you push it open, the iron hinges voicing their displeasure with a long squeak as the contents are revealed to you. The fur-lined coat your captain bought in the East lays on top of an array of shirts and pants, the fabric hardly even damp as you pick it up. You had assumed everything to be drenched, but it seems the carpenter your captain had been boasting about was the real deal after all.

You pull the coat into your lap, warmth immediately swaddling your legs.

A gift, Seokjin had called it, but you doubt the siren is simply that generous.

"How did you get this?" You quietly ask, voice trembling.

You know the stories of how the ships make it out unscathed, of how it's only the crews that go missing. But unless Seokjin can sprout legs, there's no way he was able to grab it on his own. The siren has a tail and a heavy one at that. As unearthly as he is, you doubt he's strong enough to drag himself all the way up the ship and into your captain's quarters. Never mind that he would do all of that for a chest he didn't even know existed.

"I sank the ship," Seokjin sounds like he's rolling his eyes, although you're not too sure he's even capable of doing so. "It took you too long to wake from your slumber and I was bored. I have not explored a wooden vessel in many moons and this chest looked interesting. I was foolishly hoping for treasure, not silly human clothes."

The siren smacks his tail against the water, irritated.

Even though the chances of getting out of here were slim, you were holding out hope that if you only got to the other side of the mountain, you might be able to use the ship to get away. It would be near impossible to do with only one person and not the whole crew it actually needs, but when something as ludicrous as a siren exists, manning one ship by yourself doesn't sound all that far-fetched in comparison.

You release a shuddering breath, blinking away the tears that gather. With that escape route gone, the ship now resting on the bottom of the sea with the remains of your crewmates, you are truly helpless.

Trapped.

You hope the darkness hides the way your face crumples. Lip wobbling, you try to focus on the chest in front of you, not wanting to give into panic with Seokjin so close. You have to save the freakout and the despair for when you're alone. It wouldn't surprise you if the siren can smell your fear.

Leaning forward, you notice what looks like a thick scarf, the material soft enough that it might serve as a decent pillow. You're not sure if Seokjin is planning on leaving the chest or taking it with him, so this might be your only chance at grabbing items you'll need to survive.

Just as your fingers close around the scarf, picking it up, you feel something sharp poke into your cheek.

Your whole body goes rigid at the touch, your muscles locking up as you realize that one of Seokjin's claws is currently digging into your skin. You hold your breath as he slowly trails it down your throat, the sharp nail leaving a sting in its wake. You don't have to touch it to know that it's a deep scratch, blood rushing to the surface to clot the damage.

"Look at me."

You don't. You can't. You don't want to know what will happen when you do.

"Look at me," Seokjin repeats, more force in his voice.

It makes something in the back of your mind tickle.

You clutch the coat in your lap tighter, focusing on the soft fur between your fingers as the siren's voice grows in annoyance.

You're not sure how many times he repeats his command but between one blink and the next, you suddenly find yourself staring right at him. Your mind feels hazy like it's been stuffed with cotton and shaken around, turning everything upside down.

The hard set of Seokjin's mouth disappears as you finally meet his gaze. The siren hums under his breath as he moves his hand to your face, cupping your jaw. It's like being a spectator in your own body, your eyes refusing to waver no matter how much you want them to. You can feel the ghost of his claws on your skin, not quite digging in but present enough that you know it's a threat. That he can mess you up beyond repair if he feels like it.

Seokjin leans in, watching you curiously as your throat bobs, lips struggling to part.

Your tongue feels like lead, awkward and too heavy, but you use all of your willpower to open your mouth, slurring as you ask, "What did you do?"

Seokjin breaks into a grin, a forked tongue peeking out to lick his terrible teeth. You can feel his breath wash over your face as he speaks, the stench of decay and death making your stomach roll. "You're quite the strong one, pet, I'm glad I brought you here. I think you'll prove to be very entertaining."

The siren gives you one last look, his cold fingers leaving your face as he leans back. You feel some of the thrall leave you as Seokjin turns and slowly sinks back down into the dark water, the small distance making it a little easier to think. You still can't look away from him, eyes tracking his movements even as he submerges himself completely under the surface. He's only gone for a moment before he returns, one of his pale hands coming into view above the water just before something wet splatters at your feet.

"Eat."

Seokjin doesn't wait for an answer. The thrall snaps the moment he's gone, his strong fin carrying him away in seconds.

You gasp, hand shooting up to feel your throat. The scratch he left behind aches and your head is beginning to throb from whatever he did to it. You tear your eyes away from the lake, glancing down at the thing that Seokjin left you with.

The moment you manage to make out what it is, you flinch back, jerking your body away from the mangled fish at your feet. The blood pooling beneath it has already soaked the hem of your trousers, staining it dark.

The sight disgusts you but you can't ignore the hunger gnawing at your stomach. The water in the lake felt fresh enough to drink, but it's been almost two days without any food and you're starving.

There's not a bone in your body that trusts Seokjin but you can't turn away a free meal. You have no guarantee that he'll bring you something again and you'll have no chance of escaping if you're too weak to move.

You poke at the fish, shuddering as its half-torn body twitches.

If only you still had your knife. At least then one of you could be shown some mercy.

You wake with a gasp, chest heaving with panicked breaths as the fog lifts. It's like someone snaps their finger right next to your ear, violently jerking you out of a slumber you weren't even aware you had fallen into. Your awareness always comes back to your first, keeping your mind awake and trapped while the rest of your body slowly shakes off the thrall you've been under.

You're near the edge of the dock again, kneeling in front of Seokjin. The siren has his head tucked against your neck, his long tongue dragging over your skin, licking off the sweat that rolls down your throat. Every part of you feels sticky and damp, the top of your head burning from the blazing sun. You have no way of knowing how long you've been sitting here but judging by the way your brain is practically mush from the prolonged exposure, it must've been a while.

You shudder at the next flick of his tongue, nausea swirling in your stomach. The days have been passing much in the same manner, every new turn of the moon leading you closer and closer to Seokjin. This isn't the first time you've felt his cold skin against yours, you've woken up to your hands and face being touched many times, but it's never been this intimate before. Never this dangerous, with his sharp teeth so close to your delicate skin.

Seokjin pauses, his tongue pulling away from your skin as he muses, "That lasted shorter than expected, little human."

There's no emotion in the siren's voice, nothing that gives you an indication of whether he's happy or angry. He's simply just... observing. Treating you like the experiment he's decided you are. The siren seems fascinated with your ability to somewhat resist his thrall and he has made it his mission to test out how well your resilience works. That seems to be the only reason he's keeping you here.

You can't quite tell how long he's been at it, though. Time feels wonky when you don't know how much of it has passed. The only thing you can be certain of is that it's already been well over a week, maybe even two since Seokjin trapped you here.

"Please stop," You whimper, voice shaking as you feel his hot breath against your throat, teeth skimming lightly over your skin.

To your surprise, Seokjin listens. The siren pulls back, the corner of his lip curled into a displeased snarl. He looks nothing short of irked that his fun was cut short, a series of clicking noises gurgling in his throat as he gives your shoulder a shove, breaking the last of his thrall.

You scramble backward the second your limbs feel like they're once again attached to your body, dragging yourself into the safety and shade of the cave. Nothing is stopping Seokjin from following after you, he's strong enough to pull himself into your makeshift shelter, but he seems content to stay on the edge of the stone dock - always resting against the same flat rock.

You sprawl out on the ground, panting from the heat. The cool stone seeps slowly through your clothes, bringing your temperature down to something that feels less like you're boiling alive in your own skin. But even as the heat begins to recede, you still feel terrible. The thrall always leaves you nauseous and the shock of snapping out of it in such close proximity to a dangerous predator doesn't exactly help. You're constantly on edge, heart locked in such a rapid beat that you're worried it's shaving years off your life.

Biting back a groan, you sit up, using your captain's chest for support. It wasn't easy moving it into the cave, not with a shoulder that ached with every push. The fear that Seokjin might take it back if you left it was the only thing that kept you going, the clothes inside were far too precious for you to take that risk.

The siren hasn't mentioned the chest since the night he left it but it's impossible to tell if your actions bothered him. He's too good at masking his emotions, his face a blank canvas. Some nights, you do admit that you wonder if he even has them – if he can feel the same things that you do.

You're not quite sure which answer scares you the most.

One thing you do know though, is that you need to learn more about him. You're not one to be a sitting duck and this is driving you insane. Seokjin must have some weakness, something you can use against him or that might aid you in your escape. Perhaps he hibernates in the colder months or he needs to swim for a set amount of hours for his body to function. You refuse to believe he's invincible.

"So," You swallow thickly as Seokjin turns his lifeless eyes to you, "You mentioned that you have brothers?"

Your voice is barely audible enough to carry over to Seokjin but it sounds much too loud within the walls of the cave. You ball your hands in your lap, hoping your expression doesn't show just how terrified you are of willingly calling upon his attention.

"Indeed, pet."

"How many do you have?"

The siren raises one hand to the sky, inspecting his sharp claws. "Enough."

He obviously doesn't want to answer that topic – move on.

"Y-you said something about a sea witch. How did you find them?"

"Now why would you want to find a sea witch, little human? Unless you want to get turned into a fish, they are of no use to you."

"Right, o-of course," You exhale, biting back the urge to throw some colourful language his way.

You try a few more, but there are only so many meaningless questions you can ask before you give up, tired of the aloof answers you get in return. It's like he knows exactly what you're trying to do. Considering Seokjin isn't willing to disclose any type of information, even knowledge that is worthless to you, it's pretty clear that you can't bait him into revealing anything useful.

He's too smart.

Seokjin stretches his arms above his head, showing off his lean muscles as his back pops. The crunches sound terribly loud, like he's trying to crack open every vertebra in his spine.

He lets out a satisfied sound, head tipped back to soak up the sun as he says, "Now that I have answered all of your questions, little human, you should give me something in return. Tell me something interesting about yourself, pet, something that you deem worthy of a meal. It is horribly tiresome to fetch your food at the time."

You suppose it was absurd to think that the siren would continue to feed you without demanding something in return. Perhaps he's already starting to tire of his little experiments.

You pick at your nails, the splintered edges uncomfortable and raw.

There's only one story a creature like him will find interesting – one you swore you would never tell anyone that wasn't there to witness it when it happened. But, as twisted as it is, the siren might be the only one who won't judge you.

The faded scar on your throat burns as you swallow, the phantom pain of a knife digging into your skin flaring up as you say, "I killed someone."

Glancing up, you find Seokjin staring straight at you, his dark eyes glittering under the sun. His tail does a small wiggle, fin smacking the water in what you can only assume to be intrigue.

"Tell me more, pet."

"He was sick," Your hand flies to cover your mouth as your lips move without your permission. You didn't even feel the thrall this time, no push or tug to indicate that Seokjin was in your head. There's only a small tickle at the back of your brain, like you need to scratch your scalp.

Seokjin has never used the thrall on you twice in one day before now. It must be that you're already tired from earlier that he can affect you so easily, that he can slither his way back in without you even noticing he's trying.

Seokjin grins, lips stretched into a terrible smile as he says, "Go on."

"W-we had been out on the sea for many months, five full moons, and we still had a few to go before we would reach the nearest port," You say, taking a measured breath.

"One of our cooks starting acting strangely – he was suddenly anxious and angry, exploding at any minor inconvenience. He started picking fights with the crew, causing too much tension. It was cabin fever, we all had it, but for him, it was worse. It made him sick."

You let your hands fall to your side, fingers uselessly grasping for the knife that isn't there anymore.

"He attacked one of the cabin boys in the kitchen, sliced two of his fingers clean off as he delivered him a freshly caught fish. He followed the poor lad up on deck when he ran, waving his knife around and screaming at anyone that tried to calm him down. The sea... she can be brutal, too big. Staring at the same unchanging horizon every day had chipped away at his sanity, left him with nothing but fear and anger at being trapped by the same water day in and day out."

Seokjin says nothing, his black eyes staring you down as he waits for you to continue.

"He tackled me to the ground before I even knew what was going on. When I looked him in the eyes, I knew he wasn't there anymore. There was no recognition, no emotion. Just survival. He managed to give me this while I was trying to fight him off," You lightly touch the scar on your neck, tracing it from the bottom of your jaw down to your collarbone.

"The others couldn't pull him away either, he was like a beast. I am, was, vice-captain of the ship. It was my duty to protect my crew. I couldn't let him hurt anyone else," Your voice falters as you stare at the monster in front of you, at the creature you couldn't protect your crew from. The cook was a weak mouse in comparison.

"So, I... I killed him. He wouldn't have made it even if we had locked him up, he was simply too far gone. It was more merciful to let him die."

The siren is silent for a beat, his eyes roaming over your face before he tips his head forward and laughs. At least, that's what you think he does, the series of weird clicking noises that gurgle in his throat sounding oddly joyful despite how grating the sound is.

"You truly are fascinating, pet. I made a good choice letting you live."

The hand by your hip clenches, your heart beating painfully in your chest. You wish you still had your knife, that you had something you could drive into Seokjin's throat to hear him choke on his last breaths. You weren't expecting sympathy, but you also didn't think he would find your story entertaining – funny, even. He truly is terrible.

You say nothing in return, your anger making it hard to think; to feel anything but the hatred stirring in your heart.

Seokjin, seemingly pleased with what he heard and not at all bothered by your silence, does what he always does and leaves the moment he gets what he wants.

You stare at the empty spot he left, the wet imprint of his long body the only thing left behind.

You're not sure how long you sit there, caught up in old memories and emotions you've tried to ignore for so long, but the sun has started its descent by the time the siren makes his presence known again.

This time, you watch as Seokjin leaves you not one, but five fish, all half mangled and twitching as the life drains out of them. He flings a few pieces of driftwood up on the dock, staring at your curled-up form for a minute before he swims away.

It's only when your stomach starts to rumble that you force yourself to rise to your feet, walking slowly over to the haul the siren brought you. The wood is wet and soggy, but a few days out in the sun should hopefully dry it enough that it might be used to start a fire.

You let out a humorless chuckle as you drag your hands across your face. You truly are little more than a mutt, waiting for your master to reward you when you do something he finds amusing. How embarrassing. How weak.

No matter how rabid you feel, you know that biting the hand that feeds you will do you no good here. If you want to survive, to live, perhaps it's time to roll over and accept your fate.

You're not sure if you're getting better at resisting the thrall or if Seokjin just isn't bothering to use it at full force anymore, but you no longer blackout when he comes to visit you. It feels like you're in a dream, vision spotty as you watch yourself move forward on unsteady feet, falling right into Seokjin's waiting arms. The siren holds you close to his chest, arms squeezing you so hard the pain registers even through the haze.

Weeks have passed since the day you told Seokjin your story, since you slowly began to surrender to your situation. The siren still follows the same routine but he seems to have sensed your compliance – your defeat. Your mind is still blocked off, barred from taking control of your body, but now you're able to feel everything that was only a dull memory before. Perhaps the darkness, the blissful ignorance, was a small mercy compared to this.

Seokjin lets out a guttural sound as he pushes his face into your neck, his sharp claws slicing through your shirt. His tongue drags over your skin with a desperation you haven't felt before, teeth nicking your skin.

As terrible as it is, you've grown used to Seokjin's touches, his presence. On lonely nights, you find that you almost wish to see him, just so that you don't have to face the darkness all alone.

You have come to know what to expect from Seokjin but this is new, dangerous, a far cry from the stoic and in-control creature you've been around for the past months.

The siren's hold on you is crushing, your bones aching under the strong pressure. He skims his nose along your skin, huffing as he breathes in your scent. There's a pause, a stretch of heavy silence, and then blinding pain as sharp teeth sink into your already injured shoulder.

Your vision whites out, ears ringing as the thrall suddenly snaps and everything comes rushing in at once. Your shoulder is spasming, muscles jerking with agony as Seokjin digs his teeth in deeper, an animalistic sound tearing from his throat as he draws blood.

It hurts. Gods, it hurts.

A wounded scream rips from your throat as you attempt to claw at his face, desperate to get his teeth out of your shoulder. Seokjin growls as you deliver a deep scratch on his cheek, pulling back just a smidge to create the sound. Seeing an opening, you tangle your hand in his long hair, jerking it back with all your might. You're lucky Seokjin doesn't tear a chunk of your shoulder out as his head snaps back, surprise making his tight grip around you lessen. It's just enough for you to fight your way out of his embrace, body shaking with fear and adrenaline as you roll onto the stone.

Grabbing your shoulder, you try to scoot backward on the slick ground, your own blood making it hard to get enough friction.

Your legs falter as Seokjin turns in your direction, the siren looking like he crawled right out of hell. His expression is crazed, hungry, blood dripping from his unhinged jaw. You can see straight down his throat from how open his mouth is, his stained teeth and black eyes creating the perfect picture of a demon.

Seokjin hisses as you attempt to move, a horrible sound that makes every strand of hair on your body stand straight. He digs his claws into the rock in front of him, using his strong arms to drag himself forward.

"Come here, pet," Seokjin gurgles, his voice hardly even human.

"No no, please don't," You whimper, a newfound urgency propelling you back.

Something in the siren's expression flickers at your broken pleading, like he can't decide if his hunger or entertainment is more important. The confusion, the small sliver of hope it gives you, only lasts for a few seconds before he shakes himself out of it, Seokjin's clawed hand reaching out for your ankle.

Just as he's about to wrap his hand around your foot, your feeble kicks doing little to deter him, you both hear the distant sound of people.

It must be another crew daring to brave the mountains, their rambunctious singing and laughter so terribly out of place. They're either obvious to the stories haunting the pass or trying to compensate for the oppressive silence they no doubt felt the moment the ship entered it. Your heart flutters with longing at the sound of humans singing and laughing, your chest constricting with a yearning you thought died weeks ago. They sound happy and lively – everything the siren is not.

You watch as the same realization hits Seokjin, as he registers the sound of food entering his territory. The siren's jaw pops back to normal as he licks his lips, his empty eyes flickering up to the darkening sun as he says, "The ocean appears to be smiling kindly on you tonight, little human."

Frozen to the spot, you feel your heart drop to your stomach as the siren twists around and dives back into the water with an urgency you haven't seen from him before.

The moment he's out of sight you let out an ugly sob, hope draining out of you alongside the blood that runs down your arm. You tear at the sliced fabric that's barely holding on to your body, wrapping it around your wound with shaking fingers. It's a poor excuse for a bandage, the material soaked through in seconds, but you still tighten it as much as you can, hoping it'll be enough to stop the bleeding. Only left with your undershirt, you can feel the shivers begin to set in, your adrenaline crashing.

You had given up hope on being rescued a long time ago but to have it this close, just on the other side of the mountain, is torture. You can't even alert the unsuspecting crew of what's coming, of the deadly creature that's lurking below their ship.

Scream, scare them off.

Just as the futile thought strikes you, you hear it – him. The gentle hums that cause a hush to fall over the ship.

You cover your ears, not wanting to hear what comes next. You don't know if Seokjin's thrall can still affect you here but you'd rather not take the chance and risk waking up at the bottom of the lake. Closing your eyes, you try to pretend that none of this is real, that all of this is just a terrible, terrible dream.

You let out a weak sob as the first scream pierces the air. Their terrified yells echo between the mountains as they're forced to jump one by one, their final moments brutal and panicked. There's no gentleness in Seokjin's song this time, only urgency as he compels them to their deaths.

He was starving.

For some unfathomable reason, the siren must have been starving himself to the point of breaking, trying to withhold from killing you. It all adds up to why he was acting so out of character over the past few days, his behavior more erratic than normal. He had been trying to fight off the urge to eat you.

If the ship hadn't arrived when it did, if it had only been one second too late, you would've been dead by now.

You curl up into a small ball, body cold and numb to the pain as your shield your ears, wrapping your arms securely around your head. "Thank you," You whisper to the faint moon, guilt twisting your stomach into knots.

Tears drip down your face as the screams continue to reverberate into the night, choked apologies passing through your lips until you feel them going slack. You don't fight the darkness that pulls you under, your soul begging for rest, for a place the screams of Seokjin's massacre can't reach you.

You jolt as a cold hand wraps around your shin.

Eyes flying open, you manage to push yourself up on your elbows before your shoulder gives out, the movement sending a sharp pain all the way down to your fingers. You grit your teeth, breathing through your nose to steady yourself as you glance up at Seokjin.

The siren wraps his hand tighter around your leg, using it for leverage as he drags himself up on the rock. You were close to the mouth of the cave when you passed out but now you're almost at the edge of the dock, feet only a few steps away from the still water below. Seokjin's thrall must've been too strong, urging you to come closer even when you were unconscious.

Perhaps you have truly lost your mind or maybe the night is playing tricks on you, but for once, there's actual emotion on Seokjin's face. The siren grins, his black eyes ablaze with something as he pushes forward. He tugs your legs apart, fitting his body between them. His hands rest on either side of your ribcage, his face so close that you can practically taste the stench of death that washes over your lips with every breath. The water cascading from his skin makes you shiver as it hits your own, the droplets soaking through your undershirt in seconds.

"Pet," Seokjin purrs, inching his face closer.

You hold your breath, limbs frozen with fear, as the small distance between you disappears.

You can only watch and you're horrified to find that the first thought that strikes you is how mesmerizing the siren looks. The moon shines brightly behind him, giving the scales climbing up his stomach and the small patches on his arms an iridescent shine. It's no wonder sirens have been described as beautiful creatures, not with how Seokjin's pale skin is illuminated, practically glowing, under the night sky.

You see his head tilt down, his dark eyes roaming over your bandaged shoulder. The wound only seems to ache more under the pressure of his gaze.

"Good work, little human," Seokjin comments, pleased, "You patched yourself up just to stay with me longer. I am not cruel, I will reward you for this."

What a good dog you are, licking your wounds for your master just so that he can tear them open again.

Your legs twitch on each side of Seokjin's body, resisting the urge to kick at his tail. Angering him will do you no good and you're ashamed to admit that the spark of excitement in his features leaves you curious – makes you want to know just what a siren considers a reward.

Seokjin ducks his head lower, pressing his nose right against your throat. The sharp bite you're expecting never comes – instead, there's only the soft press of his lips roaming over your skin, hurried kisses scattered across your neck. He lowers himself to get more access, nudging your head back as he settles more of his weight on your body. It leaves your hips completely immobile, your arms trembling with the effort it takes to keep yourself raised off the ground.

You hold your breath, scared to move as much as a muscle.

The siren's tongue flicks out to taste your skin with every kiss, leaving a trail of saliva covering your neck. The cold air only heightens the contrast between his warm lips and the slick skin he leaves behind. You're caught off guard when he suddenly attaches his lips to the underside of your jaw and sucks, pulling the sensitive skin there between his lips.

You let out a startled gasp at the sensation, small shudders traveling down your spine as your reaction only seems to spur Seokjin on, the siren quickly finding more spots to mark up.

Your whimper, surprised, as he uses a claw to slice through the bottom of your undershirt, exposing your waist and stomach. His cold hand finds the exposed area immediately, rubbing and squeezing at your skin as he drags his hand up and down your waist. He somehow manages to keep his claws off your skin, only digging them in faintly whenever you grow too quiet. He seems to enjoy the involuntary sounds you make, his actions only growing more and more frenzied as he tries to pull more of them from you.

"Touch me," Seokjin growls against your throat, his voice half strangled as he pushes you down to lie flat on the ground.

Mindful of your aching shoulder, you raise a tentative, shaking hand up towards his arm, grasping his toned bicep. You can feel the power thrumming under his skin, how strong he is from that simple touch alone.

Seokjin is quiet as you slowly glide your fingers up his arm and over his shoulder, feeling how the texture keeps switching between soft skin and hard scales whenever you encounter a small gathering of them. It's a curious feeling, one your brain struggles to fully comprehend.

You continue your touch down his back, careful to steer clear of the fin that protrudes along his spine. He lets out a harsh breath, low clicks gurgling in his throat as you let your hand fall away, not daring to go further than his waist.

You glance up as he pulls back, breath stuttering in your chest as you take in how wild he looks. Seokjin's expression is hungry, but it's nothing like the empty, ravenous stare you saw before he tried to take a chunk out of your shoulder. No, this one is pure desire – lust.

Your stomach flips with disgust as you realize that the hunt, that killing that innocent crew, actually turned him on.

Seokjin pushes himself back, emerging his lower body in the lake before he wraps his arms around your knees and pulls. You slide across the rock, thighs meeting Seokjin's torso as your legs fall over the edge of the dock, the water hitting just above your ankles.

You cry out from the harsh yank, pain flaring up in your shoulder as the still-open wounds are dragged across the uneven surface. The bandage does little to lessen the burn of it, your vision growing spotty as you struggle to breathe.

"You humans are so weak," Seokjin scoffs, his voice swimming in your ears. *

The siren tugs at your trousers, annoyed at how the fabric doesn't budge. He uses his claws, meeting no resistance as he slices right through them the moment it takes a little too long to get them off.

You jerk as Seokjin settles his hands on your exposed thighs, mapping out your skin.

Your vision begins to clear as you get your breathing under control, heat creeping up the back of your neck as you register just what the siren is looking at. Seokjin's torso is blocking you from closing your legs, exposing everything to him.

His dark eyes never waver from your cunt, in fact, you're not so sure he even blinks as he watches you squirm.

"Be still, pet," Seokjin says, the points of his claws pricking into your delicate flesh to get his warning across. He squeezes your thighs, his forked tongue swiping across his lips, "I was right. Your thighs do look delectable."

Horrified, you feel your hole pulse with arousal at Seokjin's words, wetness slicking up your folds.

The siren makes a curious sound at the sight, one hand drifting closer to your cunt as he lowers his head. You tense up, muscles locked tight, as Seokjin runs his finger over your clit. A choked moan makes it past your lips as he begins to rub at it, eyes bright as he lightly pinches your nub.

Receiving pleasure from the creature that has trapped and hurt you is the last thing that you want, but it's been so long since you've been intimate with someone like this. Your body gives in easier than your mind, eager to feel any touch as long as it'll make you feel good.

It's a reward, just take it. Who knows if you'll ever get to feel like this again.

"You're so wet, little human," Seokjin comments as he drags a finger up and down your folds, spreading your arousal around.

"You can't– no, no claws," You hurriedly say as you feel his knuckle graze your hole, stopping Seokjin in his tracks. "We-we're fragile, remember?"

The siren purses his lips, contemplating the information as he moves his hand back to your thigh. Arms curl under your knees before you can even breathe a sigh of relief, the air being punched right out of you as Seokjin dips his head down to lick a stripe between your folds.

"Oh Gods," You gasp, fingers clawing at the stone below you as the siren's forked tongue flicks over your clit with every pass, making your clenching hole gush with slickness.

You let out a broken moan as Seokjin prods his tongue at your entrance, black eyes flickering up to meet yours just as he pushes it inside.

Seokjin has lowered his body even more into the water, leaving him at the perfect height to feast on your cunt. His tongue worms his way into your hole, the wet muscle reaching deeper than what should be possible. Your veins feel like they're on fire, your body burning up with arousal as Seokjin licks and sucks at your folds, nose bumping against your clit. You can't stop yourself from grinding against his face, hips twitching with the little leeway he gives you.

"Seok-seokjin," Your hand flies down to his head at a particularly harsh suck, his teeth skimming over your delicate heat. The mixture of fear and pleasure leaves you lightheaded, your heart beating erratically in your chest.

The siren growls as your fingers curl into his long hair, the sound vibrating against your skin as you tug at his locks. You can't tell if you're trying to pull him away or press him closer, but either way, Seokjin doesn't listen.

You keen as his movements only seem to grow more frenzied, the siren drunk on your taste as he continues to lap up your slick. His grip around your legs is bruising, locking you in place to let him use you as he pleases. You continue to whimper out his name, your little cries only spurring him on further.

The white-hot pleasure in your stomach only continues to build the longer Seokjin eats you out, the pleasure mounting so quickly you don't know what to do with yourself.

You don't want this but you also do – and those conflicting emotions only intensify every suck and lick from Seokjin.

"Good pet," The siren groans, his warm breath fanning across your folds.

You finally erupt as he attaches his lips to your clit and sucks, your orgasm ripping through you so violently you almost feel like you're going to pass out. Your back bows off the ground as you let out a loud moan, your knuckles white from the tight grip you have on Seokjin's hair. You ride out the waves of pleasure that seem to hit you over and over, the siren lapping up your essence like a starving man – like he's never tasted anything as good before.

Your legs are trembling with oversensitivity once you come back to yourself, your cunt clenching helplessly around Seokjin's tongue as he keeps trying to lick up more of your slick. You hastily remove your fingers from his hair, weakly pushing at his head to make him back away.

"Stop, it's too much," You whimper.

Seokjin makes a displeased sound in the back of his throat, tongue dragging through your folds one last time before he pulls back. There's something in the siren's gaze that looks even more predatory than it's ever done before, his plush lips slick with your wetness. *

"You did well, little human. It was about time you gave yourself to me," Seokjin says as he brings his hands to your hips, the corner of his mouth quirked.

"What do you mean?" You say, voice faltering, "You told me to touch you, you made me touch you – made me enjoy this."

The siren tsks, shaking his head as he pushes you down on the stone dock, fingers gliding over your stomach. "Did you feel me using my thrall, little human? You touched me because you wanted to, you gave in because you wanted to feel good. This was all you, pet."

"No, that's not..." You trail off, biting the inside of your cheek. You didn't feel the ticklish sensation that usually comes with Seokjin's thrall when he asked you to touch him. You don't feel sick now, not like you always do whenever you snap out of it.

You... You did all of this on your own volition.

Seokjin sees as the realization dawns on your face, the blooming devastation making his fin hit the surface with excitement.

"That's right," He murmurs silkily, "Accept the fate that the sea has bestowed on you, pet. You were made to be my little plaything."

You feel Seokjin move away as you stare mindlessly up at the twinkling stars. You pull your aching legs together the moment he's gone, bringing them up to your chest. Without the siren's body shielding you from the frigid night air, you just feel cold. So awfully cold.

Just accept your fate.

You hear the water move as the siren ducks under the surface. The lake ripples as he swims, only a few flaps of his tail bringing him up on the side of the dock, where your head has turned. His dark eyes burn holes into your face as he drops something on the stone in front of you, the metal clinking as it bounces off the surface.

Heart stuttering in your chest, you reach out and snatch up your old knife, your shoulder burning as you put pressure on it. Your eyes grow wet as you turn it around in your hand, the familiar weight and polished grain of the wooden handle the closest thing you have to anything that feels like home.

You thought you had lost your knife forever when you jumped off the ship, that it was sacrificed to the sea together with your crew and vessel.

The siren's face is unreadable as you glance up at him, expression flat as always. One thing is for sure though – there's no part of Seokjin that views you as a threat, that's concerned you'll use your knife against him.

It breaks your heart to know that he's right. Even if you kill him, you have no way to get out of here.

Seokjin's pale hand emerges from the water to place something delicately on the edge of the dock. You let out a small gasp as he removes his fingers, the round sphere beautiful as it reflects the stars shining above. It looks to be a massive pearl made out of obsidian, the surface glossy and smooth.

You lay your knife down, meeting Seokjin's burning stare as you bring your trembling fingers forward to pick it up. The pearl is heavy in your palm, your hand barely even managing to close around the size of it.

The moment you pick it up, Seokjin lets out a pleased chitter, his mouth showing off that terrible smile again as he says, "You've proven to be a fascinating pet, I don't think I'll tire of you just yet."

"You're mine now, little human."

a/n: i really hope you enjoyed the final chapter of TOP! writing mer!seokjin was a nice break from my usual stories and it was fun to revisit the tcs-universe. i would love to hear what you think about the chapter – comments and reblogs make my day!! 🥺💖

if you enjoyed the story and would like to support me, you can do so here! 💖

#yandere au #yandere bts #yandere seokjin #mermaid bts #mermaid seokjin #seokjin smut #seokjin x reader #bts x reader #yandere x reader #bts smut

1K notes · View notes

angelicyoongie · 10 months

Text

The Obsidian Pearl (I)

— pairing: mermaid seokjin x (f) reader — word count: 7.2k — warnings: yandere, descriptions of death/blood/violence — summary: Sailing through The Dead Man’s Passage is a death sentence and the whole crew knows it. But with the ship’s stocks dwindling fast, your captain is left with no other choice. When a haunting melody makes the crew jump ship one by one, you find yourself alone with the demon lurking in the murky red water. As the creature beckons you to jump into the icy ocean – “come to me, pet” – you find that you can’t do anything but obey.

Part 01 - 02

"Captain, this is a bad idea."

A hush falls over the deck, a few whispers being passed back and forth between the crew as they watch you challenge the captain's decision. There's an audible gulp somewhere behind you as the captain pins you with a hard gaze, his jaw clenched tight with annoyance.

He taps the map that's spread out in front of him, voice leaving no room for argument as he says, "This is the fastest route."

"That may be, Captain, but it's not worth the risk. Haven't you heard the stories? The numerous crews that have gone missing after sailing in this area? There's a reason it's called The Dead Man's passage!”

A ripple of murmurs flow through the crowd at the reminder, the passage's deadly reputation making it somewhat of a ghost story – a tale every seafarer hears at one point or another. You don't know much; the few crews that have managed the journey safely have been tight-lipped about their experience, their eyes left haunted. The part that has always baffled you the most about the stories is that the ships themselves always make it through the passage, fully intact and filled with loot, but their crews never do. It's like they all vanish without a trace, like they've just been whisked away by the wind – never to be seen again.

The captain clears his throat, a sharp sound that cuts through the growing voices on deck, silencing them immediately.

"We have no choice. If we continue on the intended route we'll run out of food and fresh water a week before we reach the nearest port. Cutting through the passage will save us valuable time. I would never take this risk and endanger the crew if someone had done their job properly."

You glance to the side, catching the eye of the cowering boatswain.

He's young, far too young to handle such responsibility on his own. He's only just grown into his ears, the top of his head barely reaching the captain's shoulders. He was thrust into the position much too soon, but it couldn't be helped. The previous boatswain suddenly succumbed to an infected wound just a few days before you were scheduled to leave the last port. It left all of you scrambling to pick up the slack around the ship and the poor lad must've been forgotten in the mess.

You had tried to delegate someone to help him, but the captain had been firm that he needed to do it on his own, to build character. It's no wonder he wasn't able to calculate the needed supplies correctly, not when he was still grieving the loss of his mentor at the same time.

You notice the bead of sweat that rolls down the side of the young boatswain's face, his skin flushed with nerves. You can't let the poor lad be punished for his sorrow, not when this whole predicament could've been avoided.

Letting out a small sigh, you lower your head in apology, "I'm sorry, Captain. I should've made sure everything was in order, this is no one's fault but mine."

"I expected better from you, Quartermaster," The Captain's comment cuts deep, even though you know this wasn't your fault. "Very well. Seeing as you have placed our crew in peril, I doubt you will oppose the solution to the problem you have created?"

You grit your teeth, dipping your head lower as you say, "Of course not, Captain. I apologize for speaking out of turn."

Clenching your hands by your side, you try to focus on the hot sun beating down your neck as you tune out the captain's voice. Getting angry won't do you any good here, not when you've already admitted defeat. The heavy thumps of feet moving all around you tells you that the crew is already beginning to change the ship's course, listening to the captain's orders as he yells them out. You shake your head, stomach churning as you realize that no one dares to challenge him, even if they all know deep down that they're being lead straight to the deaths.

You steel yourself as polished boots pause in front of yours, eye twitching as you look up and meet the captain's gaze. His solemn expression doesn't quite match the light tone of his voice as he leans in to say, "A hungry crew is a dangerous crew, Y/n. I don't think I need to remind you why that is."

Suppressing a shudder, you don't give him the satisfaction of knowing that his little comment has had the intended effect, bad memories already swirling in the back of your mind. Instead, you stare him down, defiant as ever until he shakes his head and walks off in the direction of his cabin.

It's only when he's out of sight that you reach up to trace the raised skin on your throat, the jagged scar that greets you whenever you glance in a mirror. No, there's no reminder nor threat needed. You know first-hand just how desperate a person can become when they're feeling depraved of what makes them human.

You swallow thickly, ripping your hand away from the old wound. There's no use dwelling on the past, there's nothing from that day that can help you now.

The sound of the sails billowing out as they catch more wind jerks your attention forward, gentle waves crashing against the hull of the ship as it picks up speed. You take a deep breath, filling your lungs with the salty air and pray to whatever god that might be listening that you'll be able to make it out of the passage alive.

The night has already fallen, the moon high in the sky, by the time you catch sight of the two large rock formations in the distance. Everything about the passage screams unnatural and strange, the two small mountains practically appearing out of nowhere in the middle of the sea. While they look to be on the smaller side, you know there's no way to sail around them. The waters are littered with reefs and strong currents, all traps that are bound to sink unsuspecting ships. You can make out the faint outline of a few of them on the horizon, their broken masts and half-sunken hulls serving as a haunting reminder that the only way past the passage is through it.

You squint as you notice a faint glow in the distance, the light too obscure to make out properly on deck. You quickly make your way up to the helm, hoping the raised platform will provide a better view.

"What's that?" You murmur, shooting the coxswain a worried glance.

"Ain't anything good, that's for sure," The man grumbles in reply. He tightens his grip on the wheel, eyebrows drawn tight as the ship steadily draws closer and closer.

The faint glow grows brighter with each passing minute, more and more sources of light appearing all over the two mountains. You suck in a breath as the ship enters the passage, the area so tight it barely allows for two vessels to pass each other. The close proximity allows you to see the lights more clearly, and you're shocked to discover that it seems to be coming from huge white flowers sprouting from the mountain sides. There's something algae-like clinging to the base of the mountains as well, illuminating the edges of the passage like guiding lights, beckoning you in.

The ship glides smoothly through the channel, the soft current carrying you all through the quiet water. Based on the stories you've heard you were expecting treacherous waves and jagged rocks that appear out of nowhere to throw the crew off-board, but there's none of that. In fact, there's nothing that points to this passage being dangerous at all, no signs of broken planks or fabric clinging to the mountain, no sunken ships visible below the surface. You can almost fool yourself into thinking that no other humans have ever sailed through these mountains before.

As beautiful and untouched as the passage may seem, there is something terribly unnerving about the silence that has settled over the ship. The crew has gone completely still, like they're scared of breaking the quiet. Likewise, you can't really find it in yourself to make any noise either, your lips pressed firmly together as you anxiously scan the mountain for hidden threats.

You've almost made it halfway through the passage when you first hear it.

There's a low hum, barely louder than the noise of the water breaking against the ship, that echoes between the tall rocks. You have to strain your ears to hear it at first, but the sound seems to grow with each gust of wind in the ship's sails, gradually increasing the further into the mountains you go.

You can't make out any words, the language either too old or foreign for you to understand, but the angelic voice behind them makes your heart yearn. You can feel the melody wrapping itself around your heart, squeezing, as it roots itself in your ribcage, sorrowful tendrils clinging to each bone.

"Come to the water."

The wind carries the whisper straight to your ear, caressing your skin like a warm breath, before it travels on. You jerk forward at the sensation, whipping your head around to locate where the voice could be coming from.

There's no one around you aside from the coxswain who looks to be lost in thought, mouth slack as he stares ahead.

You glance down at the deck, frowning as you notice that more and more of the crew are beginning to abandon their posts. They're all migrating to the right side of the ship, walking on unsteady feet like they've been guzzling down barrels of mead.

"Come to me."

You wince as the singing grows more intense, your breath stuttering in your chest in response to the voice that's so desperately calling for you.

You blink, eyes struggling to adjust, as the flowers and the algae on the mountains begin to thin out, taking their light away with them. As if that wasn't bad enough, a great shadow is suddenly cast upon the passage, the last of the illumination you had rapidly disappearing behind thick clouds as the moon is hidden away.

You curse under your breath, mentally taking note of the lit oil lanterns hanging around the ship. There's ten, no– nine, but if you gather them all up and place them near the bow, maybe it'll be enough light to get the ship safely out of the passage?

"I need to– hey!" You stumble back as the coxswain bumps into you, his eyes unseeing as he stumbles towards the stairs to the lower deck. A sudden drift to the side propels him forward, allowing him to slip out of your reach before you can grab his shirt and haul him back.

"Shit," You hiss, only giving yourself a split second to hesitate before whirling around to grab the wheel. The wood has already begun to turn left without the coxswain's steady hands to lead the way and the ship groans as you hurry to correct it back on the right path.

You keep a tight vise on the wheel, leaning forward to yell out for another crewmate to take over, when you hear the first splash.

Hurriedly glancing down at the deck, the swaying lanterns provide just enough light to show one of the cooks climbing over the railing, his movements stilted and jerky as he suddenly flings himself off the ship. Your scream is caught in your throat, your eyes wide with horror as you hear the subsequent splash of his body hitting the water.

What in the gods is going on?

Feet rooted to the floor and fear squeezing the back of your neck with a iron grip, you can only watch as the crew all clamber over the railing, throwing themselves off the ship one by one. The steady melody echoing between the mountains is only interrupted by the terrible sound of bodies sinking into the ocean.

Dread settles deep into the pit of your stomach as you realize there are no screams, no gasps for air, only silence – and him, the voice that's begging you to come rest along your brethren in the deep, peaceful ocean.

"No," You wheeze, shaking your head to rid the fog that's has begun creeping in. You cling to the wheel, fingers slick with sweat as you try to keep the ship steady, ignoring the blur that has settled at the edge of your vision.

"Captain!"

Hope shoots through your veins as you find your captain in the dwindling crowd, his bulky figure illuminated by the dancing lights as he stumbles over to the nearest crewmate, pulling them back from the railing. He pushes a few men back, his strength sending them sliding back to the middle of the deck.

You almost loosen your grip, ready to run down and help him, when he abruptly turns his back on them and jumps over the railing in one swift motion. He lands on the small ledge just outside of it, heels shuffling not to slip as he grips the banister with one arm.

"Captain!" The scream rips out of your throat, carrying across the silent deck like a bullet.

The captain shudders as it reaches him, his body jerking back and forth like he can't make up his mind on whether he should jump or not. Horrified, you watch as he twists his upper body around to face you, his expression stricken as he meets your gaze across the ship. He almost looks like he just came out of a trance, his face drenched in sweat and skin grey with fear as he tries to figure out how he ended up at the edge of the vessel.

You can see mouth opening, his lips forming around the first syllables of your name when the angelic voice suddenly grows louder, the haunting melody reverberating between the mountains. The captain's mouth goes slack, his eyes rolling into the back of his head as he once again succumbs to spell that was controlling him. The last thing you see as the captain lets go of the railing, is the serene smile that takes over his face, his eyes closing as he falls backwards into the ocean.

Heart pounding inside your chest, you stare blankly at the now empty spot where your captain stood. You flinch, sick to your stomach, at the heavy splash that follows only seconds later.

"Lay your tired body to rest."

Your fingers twitch at the command, a little whisper in the back of your mind begging you to obey – to give in. You legs have started to shake, sweat sliding down your back in a steady stream at the effort it takes to resist the pull.

Even as you struggle to gulp down enough air, your body in overdrive from the unfathomable things you've just seen, you still find your pulse quickening, panic flooding every fibre of your being as it finally dawns on you what's going on.

You've sailed right into the territory of a siren.

Perhaps you should have seen it coming – the tales of the passage all emphasize how it's only the crew that go missing, not the ships. You've heard whispers about creatures lurking in the deep ocean, of monsters that eat humans, but you never expected that you would ever encounter them. They were folktales, something you chose not to believe in to protect your own sanity as a seafarer. Now, you can only curse yourself for not trusting your instincts the moment you felt the unearthly atmosphere of the mountains; that you didn't have enough forethought to at least stuff your ears and tie each crewmate to their post as a precaution.

Maybe it would've been enough to save the them – to save you.

You cower against the wheel as the song grows so loud it causes your ears to ring, the voice promising peace and eternal slumber. It urges, demands, your body to move and you whimper fearfully as your feet take a step back against your will.

You can't tell how much time has passed since the ship entered the mountains, it could be mere minutes or it could be hours – but as you peer into the looming darkness, you can finally make out where the passage ends and opens back up to the vast sea. The joy fizzles out before it can even take root, the sight in front of you filling you with a sense of glum acceptance. Even if you can see the end, there's no way you'll make it there. The ship is moving too slow, almost no wind making it past the tall mountains.

Your head throbs painfully as the siren's whispers turns more insistent. You can feel the creature's wrath, how angry he is that you're still resisting him. The increased pressure behind your skull makes you groan, your vision going dark as you're hit with a sudden dizzy spell.

Gripping the wheel, you're confused to find that the woods feels thicker, less polished, than it was only seconds before. You force your eyelashes to part despite the sharp pain it gives you, blinking furiously to clear your swimming vision. Your knees nearly buckle as the silent waters below come into focus, your body no longer on the upper deck. Dazed, you stare at the white knuckled grip you have on the railing, your feet tucked into the openings between the posts.

"Oh gods," You whisper shakily.

You have no idea how you got here.

The sound of a soft splash makes you turn your head to the side. Your throat runs dry as you watch the big circle of ripples that fan out from the spot where something dived underwater, the waves much too big to come from a normal fish. As you keep looking at the one spot in disbelief, one of the lanterns on the ship sway outwards, following the rocking of the ship.

It takes you a moment to realize what you're seeing, the stale bread you had earlier that day shooting up your throat as the waters on the side of the vessel is lit up. The ocean is no longer the clear blue it was when you entered the passage but rather a murky red, saturated with what must be the blood of your crewmates.

The sight makes you heave, tears springing to your eyes as the reality truly settles in.

You're going to die.

The siren – the predator – luring you all to your deaths, is clearly waiting right below, ripping everyone apart the moment they're submerged below the water. Even if the shock of the cold sea woke them up from their trance, they would have no chance to fight off such a vicious creature. You have no chance. The moment you step off the ship, you're dead.

You sob as the shock tapers off, the singing once again hitting you with full force. You can't stop your own body as you clumsily clamber over the railing, your feet moving without your permission. It's only when you hit the ledge that you find yourself able to jerk back, a moment of temporary control allowing you to plaster yourself against the banister.

Staring down at the crimson sea, you find your mind going blank. You always expected to see flashes of your life pass by your eyes when faced with certain death but there's nothing. No happy memories to numb the inevitable pain of being torn apart, muscles shredded to bits as water fills your lungs. No echoes of the voices you adore saying that they love you and that everything will be okay.

Instead, there's only the deadly quiet sea and the siren's taunting whispers urging you to jump.

You eye the dark water, noticing a large shape moving closer just under the surface of the ocean. You mindlessly reach for the dagger on your hip, clutching it tightly in your hand even if it means you're only clinging on with one arm. If your death is unavoidable, then you're sure as hell not going down without inflicting a deep cut or two.

As something begins to emerge from the water, the song that has been constantly ringing between your ears suddenly quiets down. Your skin puckers with goosebumps, all the hair on your body rising in fear as a head slowly rises above the surface. The siren's dark locks are one with the water, the long strands flowing into the ocean like spindly fingers. In the dark, there's no telling where it ends, as if the ocean is merely an extension of the creature itself.

Two pitch black eyes, as dark and deep as the starless skies above, lock onto yours the moment they rise above the surface. The flickering lantern doesn't offer much assistance but the poor light tells you that it has no discernible pupils, nothing to indicate that there's any life in them. It's like staring into an endless void.

Despite the chill those eyes send down your spine, your feet willingly takes another step forward, like the mere presence of the creature alone is enough to entrance your body. You let out a pained scream as you slip, your shoulder popping loudly as you manage to grab onto a post, one arm working desperately to keep you from failing into the water below.

"No, no, no," You whimper, gravity making it impossible to reach up with your other arm. You won't be able to pull yourself up even if you drop your knife, the small ledge above making it impossible to locate another post.

You glance down as you dangle from the ship, your grip almost slipping out of fright as the siren's maw comes into view above water. His jaw is unhinged, hellish, mouth stretched way past that of a normal human. It's filled with rows of fang-like teeth, all stained with crusted blood. Terrified, you watch as the siren seems to simply pop his jaw back into place, like the fact that it was just opened so wide it was touching his sternum poses no issues at all.

The creature tilts his head, thinking, as he watches you struggle to drag yourself up. He swims closer, the movement so fluent it looks like he's just gliding through the water. Your arm is shaking terribly by the time he's only a few feet away from where you'll hit the ocean, your shoulder screaming with hurt from holding on for so long.

Through the blinding pain, you see the siren reach out a webbed hand, his long black claws nearly the size of his fingers. He gives you a smile you can only describe as sinister, blood stained teeth on display and his voice melodious as he says, "Come, pet."

You can feel the thrall taking hold this time, your body willingly going slack one limb after the other. You have no time to think, no time to act, before your hand simply just lets go of the railing on its own volition.

In the second it takes for your body to fall, before your eyes squeeze shut and your body is surrendered to the water – all you can think as you spare the skies one last glance, is that the gods must be cruel if they can't even give you a starry night to look upon before you're torn apart by their horrific creation.

Groaning, you slowly open your eyes. There's a dull ache at the base of your skull and every blink up at the pink-tinted sky only seems to make it throb more. The surface you're lying on is hard, terribly uncomfortable, and there's no steady rocking motion to soothe you back to sleep for a few extra minutes of rest.

Something feels wrong.

It's only when your eyes have fully adjusted to the soft light that you're snapped back to reality, the distant sound of waves breaking bringing back the memories of the night before. You jerk upright, heart racing, as they come flooding in all at once. The crew, the siren, the blood. You jumped. You should be dead.

You force yourself to take slow, steady breaths, shakily inhaling air through your nose as you glance around. You can't afford to panic right now, not when you don't know where the creature is or when it might come back.

The morning sun is just barely peeking over the top of the mountain that's blocking most of your sight, casting a large shadow over what appears to be a lake just in front of you. It's still dark, still dawn, on your side of the mountain and it makes the faint glow on the rocks all the more noticeable. You're too far away to tell for sure but you have a terrible feeling that it's likely the same flowers that you sailed past in the passage. And if you can still see them, that means you must be on the other side of the mountains you attempted to travel through.

You're sitting near the mouth of what appears to be a small cave, connected by a large piece of flat stone that's jutting out into the lake. It's lined with clusters of big and small rocks, creating an odd border along the sides of it. The mountain around the cave is unnaturally smooth, the incline too sharp for you to even think about climbing it. No matter how much you stare at the rock formation that's surrounding you, you can't find a way out. There's no open space that would allow you to escape.

You eye the other side of the lake with a shudder, noting that it looks to be more rough there with a few ledges and ridges you can probably use to haul yourself up. The only problem is; you'll have to actually swim across the deep body of water first. It sounds like a sure-fire way to get yourself eaten, though you doubt staying here is much better. The creature must've kept you alive and brought you here for a reason, and you're really don't want to find out why that is.

A pained gasp escapes you as you pull your right shoulder back. The initial adrenaline and panic when you woke up must've blocked out most of the hurt of your dislocated shoulder but now that it's starting to fade, it's coming back fast. The bone is still very much popped out of its socket, the area inflamed and swollen as you lightly touch it with trembling fingers. You swallow thickly as your arm begins to twitch, a burning spasm racing from your shoulder to the tips of your hands.

You bite down on your lip to stop your groan, tasting blood as the involuntary cramp continues.

"Fuck," You wheeze, eyes glazing over as you stare at the rising sun. If you're going to have any chance of escaping, you have no choice but to fix your shoulder.

You stuff the damp material of your shirt into your mouth, hoping it'll be enough to muffle your voice as you carefully lie back down on the stone. Years on the sea has taught you a thing or two and dislocated shoulders are a common injury when you're part of a crew that loves to brawl whenever they visit a tavern. You've seen the way they pale and yell when it gets adjusted and while you have no idea if the siren will be able to hear you scream – you'd rather not risk it.

White hot pain pulses out of your shoulder as you extend the arm to raise it above your head, your vision blurring as you slowly reach for your opposite shoulder behind your head. It hurts, gods, it hurts, but you have to do this. You release a muffled scream as the dislocated bone finally pops back into place, cold sweat dripping down your temple as you tremor with pain. You lay there, harshly panting through the cloth in your mouth, until the hurt subsides to only an ache.

You wince as you push yourself off the hard stone, spitting out your shirt to release a labored breath. Your body feels battered and bruised, completely worn down from all the horrors you've been through in the past six or so hours. You have no idea if you even have enough energy to make it across the lake, the distance probably greater than it looks, but what other alternative do you have?

Just as you're about to get off the ground, the sound of a soft splash echoes between the mountain walls. You jerk, heart skipping a painful beat in your chest as you frantically scan the water. You freeze when you notice how the surface is rippling much closer than expected, only a third of the lake between you and the waves that are parting around a dark shadow.

Out of instinct, your hand falls to your hip, searching for your knife. Your fingers only grip around air, the smooth handle nowhere to be found. In your panic, it takes you a second too long to remember that you held it as you fell from the ship, the knife probably lost somewhere at the bottom of the passage.

You scramble back on the rock as the creature's outline becomes visible, hands reaching out blindly behind your back for anything that can be used as a weapon.

You falter, blood running cold, as pale arms suddenly reach out of the water, planting themselves square on the edge of the rock. The siren heaves himself up without any issues, resting his back against one of the larger stones that's lining the flat extension of the cave. Water drips off his body like sparkling crystals in the morning light, giving a healthy glow to his otherwise almost sickly white skin. His long black hair hangs like a curtain in front of his face, the strands reaching far past his back, dipping into the water.

Patches of scales litter his arms and abdomen; a long fin running down the length of his spine. You find it hard to believe your own eyes as you stare at his stomach, at the area where the creature's human-like qualities disappear completely and transitions into that of a fish. His tail is long and thick, dreadfully similar to a serpent in the way it undulates on the rock as the water slowly evaporates from its scales. The slight movement allows the sun to dance across the siren's tail, showing off the iridescent glow that was hidden by the dark night. The sight leaves you transfixed, hues of colors you've only seen in the sky shimmering across his body.

Your attention is only stolen away when the creature raises one of his hands, his webbed fingers and pointed, long nails looking like they've been dipped in black ink. He runs his claws through his hair, parting the long locks that've been hiding his face.

You jerk back, swallowing thickly, when you find that the siren is already staring in your direction. His eyes are just as dark and emotionless as you can recall from the night before, two endless pools of black. The lack of a discernible pupil is unnerving, it makes it all that much harder to tell just where the creature is really looking. Long lashes frame his haunting eyes and the perfect slope of his nose leads down to the plushest, red lips you've ever seen.

You feel yourself pale as he opens his mouth, those horrible sharp teeth becoming visible as he calmly says, "Your knife is long gone, human." The siren dips his head slightly, looking at the way your hand is still resting near your hip, desperate for the familiar comfort of your knife.

What?

Your mouth parts in disbelief, brain slow to compute the fact that the creature just spoke, out loud, with a voice that sounded eerily human and ordinary.

"Can you not talk, pet? I swear I heard your sweet voice refusing me when the moon was high."

"I-I can," You stumble over your words, tongue twisting in your mouth under the siren's watchful gaze.

"Wonderful!" Something pleased passes over his face, his fin hitting the water with an excited splash. The loud sound makes you flinch, droplets spraying up on the rock just shy of your legs. The corner of the siren's lips quirks at your reaction, as if he finds it funny.

It reminds you of the way your crew used to look at street dogs, their expressions taunting and terrible as they made them do tricks for scraps of food.

It's cheap entertainment, they always used to tell you.

You can't help but wonder if that's what you are – mere entertainment for the siren until he decides to stop playing with his food.

The thought makes you furious. The mocking twist of his lips gives you a sudden rush of defiance, your rebellious nature rearing its head despite the dangerous predator right in front of you. Perhaps there might have been some truth to what your captain always liked to say – you never quite learned when to back down and keep quiet.

You breathe in slowly through your nose, attempting to calm your racing heart as you say, "How are you speaking a language I understand?"

"Easy. Humans are simple creatures and so are their languages," He answers, cocking his head.

"What are you, then?" You blurt, "Parts of you look human and the rest does not. Were you cursed?"

Like the flip of a coin, the siren's expression turns hard, offended, at the insinuation that he might be human. He jerks forward, lips pulling back to reveal his sharp teeth as he lets out a terrible hiss. The sight sends all the alarm bells inside of you blaring, your shoulder screaming in protest as you collapse backward, using your elbows to drag yourself further inside the cave.

"I am not a fragile human," He scoffs, turning his head to glance out on the lake. He flexes his tail to deliver another harsh smack to the water surface, the sound bouncing between the walls of crater. "Have you not heard stories, little human? Of creatures blessed with qualities of the sea and land?"

It takes you a moment to regain your voice, fear making it tremble as you carefully say, "Do you mean mermaids?"

"Correct, pet," He hums, "I see you're not completely hopeless."

You dig your nails into flat rock, voice tight as you ask, "What about the singing? You.. you made everyone jump. I didn't know mermaids could do that."

The siren looks wistful as tips his head back to face the sun. He closes his eyes with a small sigh, "Life becomes tedious when you stay in the same place for too long. I needed something new, so I left my brothers for colder water after hearing about these great big things that moved through the oceans there. Hm... I wonder if the ships have managed to reach them yet, it must be close to fifty humans years since I left."

You blink, shocked that the siren is well over twice your age. He looks young, definitely not a day older than you, but you suppose creatures like him must age at a different rate. Clearly the world is much different from what you first thought – slow aging is likely the least fantastical thing out there to discover.

"The ships lost their charm quickly," He adds, "But the humans on-board were fascinating. They called out to each other in melodies, both happy and sad as they sailed through my home. I was alone here at first, few of my kind dared to venture into colder climates, so the humans were all I had for company. It took me many human years to reshape my throat but I eventually learned to mimic their sounds. After that it was easy to learn the most common tongues that passed through my water."

"One day a ship of humans heard me singing and came looking for the source instead of passing me by – that was when I realized it was a wonderful way to lure you in. Your species have always been much too curious for your own good," The sun catches on the siren's teeth as he grins, highlighting the rows of fangs lining his mouth.

You shudder, stomach turning at how easily he speaks of the hundreds, if not thousands, of people he must have murdered over the years.

"Many moons passed and I grew tired of playing with my food. I found a sea witch – awfully slippery creatures – that gave me part of her magic, making it possible for me to enthrall humans from a greater distance. She was of great help, quite tasty too."

You can only stare at him in silence, lips pressed together tightly to hold back the acid burning at the back of your throat.

"I believe you humans created a name for me – to ward off others from crossing my path," He cocks his head, expectant, as he sends you a side-ways look.

"You're a siren," You whisper, pulling yourself back another inch.

"The one and only, pet," He purrs. "Though, I would prefer that you would utter my real name over something made up. Try saying Seokjin for me, little human."

You'd rather force your shoulder back into its socket a hundred times before complying to a monster's wishes, but it isn't exactly a request you can refuse.

So you grit your teeth, forcing out a stilted, "S-Seokjin."

Disgust curls deep in your stomach as the siren's tail once again quivers back and forth, seemingly pleased with your acquiescence.

You look across the lake at the unmoving mountain, mustering up the courage to ask the question that's been at the forefront of your mind ever since you woke up. "What happened to my crew?" You ask weakly, "Are any of them still alive?"

"No."

The answer comes easily, no hint of remorse or guilt in the siren's voice.

You can feel your nails ache and splinter against the rock as you scrape them across the surface, desperate for something to hold on to as you say, "Did you ... Did you eat them?"

"Of course. Do you expect me to starve?" Seokjin replies impassively, "You humans hunt your food too, I've seen how you use those rope contraptions to gather up fish."

You knew there was little chance of other survivors, but the confirmation still feels like a shock. Your vision swims, hot tears burning your eyes as unwelcome images of your crew – your captain – eaten by the very creature in front of you, flashes across your mind.

"We don't hunt other humans! Nothing this close to our own species!" You cry, voice rising with anger as grief twists itself around your heart. Your crew might not have been much, but they were still the closest thing you had to a family – a home.

Seokjin looks unmoved by your outburst, bored almost, as he says, "Pet, this is how the ocean works. Do you lecture fish when they eat their smaller brethren? Species do not matter. It's either kill or die here."

"Then why am I alive?" You ask, swallowing thickly around the lump in your throat.

The siren seems to perk up your question, scales glistening as he straightens up against the rock. He finally turns his head to face to you fully, his dark eyes sparkling with excitement. "See, little human, now you're finally asking the right thing. I find you fascinating – I haven't had a human pique my interest in many moons. I want to know how you managed to resist me for that long, why my thrall isn't as effective on you. What makes you so different from all the other humans that have jumped so willingly into my water?"

A foreboding sense of unease washes over you as Seokjin speaks, every muscle in your body tensing with fear. The siren wants to study you? The only way he can do that is to continue to use his thrall - his voice - and make you do things you do not want to do. He can force you to present your limbs for nibbling and you'll be none the wiser until it's too late.

"I don't know," You shake your head, "I-I didn't even know you existed until last night!"

"How disappointing," Seokjin clicks, the flicker of emotion on his face once again melting away to nothing. "Well then, pet, as expected, it seems you will be staying here until my curiosity is sated."

"What?" You clamber to your knees, gripping them tightly to keep yourself from doing something as humiliating as bowing – begging – the awful creature in front of you for an ounce of humanity that he clearly does not have.

"You can't do that, I can't stay here!"

"Then jump in the water and see how long you last," Seokjin once again flicks his strong tail, the harsh smack sending a tremble down your spine.

The siren's lips part into a something akin to a twisted smile, his blood speckled teeth making you sick as he hums, "Your thighs look delectable, little human, and I am quite prone to an early morning snack. So unless you want to watch as I eat you alive, you better stay put."

There's a minuscule quirk to his brows, a challenge, as he watches you absorb his words. Seokjin doesn't wait for you to give him an answer, your stunned silence more than enough for him. He doesn't spare you another glance as he pushes himself off the rock, effortlessly jumping back into the lake. It only takes a few seconds, a couple of strong flaps of his fin, before he disappears from view and his dark tail is nowhere to be seen.

You find yourself frozen to the spot, unable to move as you stare mindlessly at the spot Seokjin entered the water. The harsh ripples dancing over the surface is the only proof you have that you haven't lost your mind, that all of this is actually real.

Pressing your hands to your face, you finally allow your body to break, to mourn, as you release pained sobs into your palms. Everything hurts. Your body, your mind, your heart. You have no idea how you're going to escape to the mountain on the other side, and even if you do, then what? The siren can just use his song to lure you back down.

Seokjin has made the situation very clear. You can try to cross the lake and dive straight into your own grave, or you let him do what he wants. Either way – you fear it won't take long before the siren makes good on his promise.

You don't doubt it'll amuse him to make you watch as he tears you apart, piece by piece.

a/n: hello folks!! we are once again diving back into the TCS universe, only this time with seokjin as our lead mermaid! what do you think about him and his siren powers so far? this will likely only be a two part series, with more yandere behaviour and some smut in the final chapter, so if you enjoy the story so far please let me know! it’s really motivating to hear your thoughts and read your comments (and reblogs help a lot)!!

the final chapter will likely be posted in july if there’s enough interest for it 🧜‍♀️

in case you enjoy my stories and want to buy me a coffee, you can do so here! 💖

#yandere au #yandere bts #mermaid au #mermaid seokjin #yandere mermaid #mermaid bts #seokjin x reader #yandere seokjin #yandere x reader #bts au #seokjin au #bts fanfic

1K notes · View notes