#mermaid deku | Explore Tumblr Posts and Blogs

envy-of-the-apple · 1 year

Note

Hi, I really liked you're mutual fascination fic, and was wondering if you could do a part 2? No rush, I just really enjoyed it. Thank you

I didn't realize that would get so popular! I appreciate yall! remember how I said this was based on the worldbuilding of a bakudeku fic?

Naga!Yandere!Bakudekutodoeiji x reader x Mermaid!Yandere!OchaMomoTsuyuMina

Part one

(Yandere, Captivity, Isolation, Dark content, innervictim blaming)

They've probably noticed you were gone by now.

This won't do anything. Sitting here, by the shore, watching the waves toss and turn so freely in the horizon. You can't escape. All this rebellion is doing is making things worse.

Katsuki would probably try to grab you, pulling you by the elbow, too enraged to care that he hurt you. Izuku, ever your savior, would try to dissuade him, inevitably getting into a fight with his pack leader. It would leave you to Eijirou's and Shoto's arms, as they both try to console you and themselves that you haven't left them. You know them so well. You hate it.

But you couldn't help but take the chance to run when they were so distracted. It was all so suffocating. You were so sick of their constant attention. Just one second away would make it all worth it.

So you stay on the shore of the beach, biding your time.

You wonder if you could've done anything differently back then. Back when they weren't so invested in you. Had you accidentally made them think you were available to them? Had you infringed on a ritual usually done by other mates?

Then again, what hadn't you done? You ate their food, you smiled with them, you taught them your language, and you slept with them for fucks sake. How could you have been so stupid?

A sigh escapes your lips. You feel drained. You don't want to think, not now. Mindlessly, you dip your bare leg in the water, swirling it around. The water cools down your heated skin.

You freeze when you catch two green eyes staring at you from beneath the surface.

At first, you think it's Izuku. But the naga hardly ever goes into the water.

And the face is too feminine to be Izuku.

You don't scream until a slender, wet hand shoots out of the water to grab your leg. You shriek, choked with fear as you immediately thrash around. The hand is strong, barely relenting against your rebellion until someone else's hand forces a release.

You scramble backward, tripping over yourself as you try to get away from the water. There's clicking, angry, like a warning. It reminds you of the tone Katsuki uses against a rambunctious Eijirou.

"Sorry," A girlish voice calls out, "Is sorry."

The soft tone catches you off guard. It's been so long since you've heard voice other than Katsuki's baritone roar. Curiosity wins over fear. You creep back, peeking into the ocean.

Two faces look back at you. The first one, the one that grabbed you, guiltily looks away when you look at her. She lets out a small thrill, softly brushing away her green locks. The new face gives another annoyed click before glancing up at you. Her cheeks are round, pink, flushed. She looks so soft as she smiles at you with pretty brown eyes.

"Scare you. Sorry," She repeats.

You stare at them, transfixed. You hadn't even known other beings other than the four nagas lived here. It made you feel ecstatic, as well as a little apprehensive.

"It's okay," You find yourself saying, "It...surprised me. It's okay."

You turn back to the green-haired girl, giving a tentative smile. She beams, seeming positively delighted that you acknowledged her.

"Who are you?" The brown-haired girl blinks at your question. She points at herself.

"Ochako!" She says proudly, before moving to her partner, "Tsuyu."

You nod. They wait, staring intently at you. Realizing yourself, you fumble out your own name. Ochako repeats it on her tongue over and over again. Tsuyu watches her, tittering.

"Others too!" Ochako adds when they're finished fangirling over your name, "You meet? Others?"

You blink, shrinking back. "You mean...Katsuki?" Had you read this wrong? Were these two just goons Katsuki sent to find you.

To your surprise, Ochako's nose wrinkles in disgust. She hisses.

"No. Katsuki bad." She gripes, "My mates. You meet?"

You relax, finding relief she disdained Katsuki as much as you. You nod.

"I'd love to meet your mates," You respond. Who knows, maybe finding new allies could help you get off this island.

Ochako looks positively overjoyed. She trills before disappearing under the shore. Tsuyu stays, silently staring at you.

You wave.

She timidly waves back and you catch her staring at your legs.

You aren't unused to the attention your legs give you. You're an oddity among this kind. You understand that. You fascinate them. It can give you leverage, especially if you want to be liked, to be helped.

"You can touch, if you want," You offer.

Tsuyu blinks up at you with wide eyes. She hesitantly comes forward towards your legs. Her hands linger, just an inch or two away from your skin before she looks back up at you for confirmation.

You nod. She presses cold fingers against your skin, cooing with awe.

As she studies you, you study her. There are a lot of differences between her and Izuku. She's more slender, but considering how easily she grabbed you, their strength must be evenly matched. She has claws that she careful to not nick your skin, but you can also spot some type of webbing in between her fingers. Your gaze travels to her forearms, catching the sight of translucent fins on each one. It makes you wonder if the females of their species are more equipped to water than the males.

Ochako comes back a minute later. You pull away from Tsuyu, who sighs in disappointment. Two more heads follow her. A girl with unruly pink hair smiles eagerly at you. She's easily the most inhuman of them all. Pink skin, black sclera with golden eyes.

The other one, with black hair and inviting black eyes, smiles at you.

"When Ochako said a human was here, I almost didn't believe her," She spoke more coherently than Katsuki did. You wouldn't have been surprised if she was human herself.

"Hello," You breathe, suddenly overwhelmed by the attention.

"I'm Momo," She says. The pink-haired one beside her can hardly contain herself. She nearly jumps out of the water to greet you.

"Mina!" She titters out what is most likely her name. "Hi! Hi! Hi!"

"Hi, Mina," You say, failing to replicate her enthusiasm. She's about to move closer when Ochako gives her a glare, pulling her back. Mina deflates, but she doesn't argue.

"So, are you...?" You point at them, "Naga? You don't look like naga."

Momo smiles, "We most certainly do not." As if to prove it, Mina pridefully lifts up the rest of her body. You gape at the beautiful pink tail.

"Mermaids?" It doesn't sound possible, but you were also kept against your will by four possessive naga.

Momo nods, "There are many words you humans use to call us. That should suffice."

"I'm curious, how did you get here?" Momo suddenly asks, "I don't mean to be rude, but we usually don't get humans at these parts of the world."

"I was shipwrecked," You sigh, leaning closer, already feeling more comfortable with the four mermaids than you did the other naga, "I've been here for weeks with..."

Momo is able to piece together your story, "Katsuki, Izuku, Eijirou, and Shouto."

The other three stiffen at the names. Ochako hisses again. The fins by the sides of Mina's head flatten as she scowls. Tsuyu meekly ducks her head underneath the water.

"You aren't fans of them," You state from their reactions.

"You could say that," Momo trails off as she observes you, "Forgive me, but you have been staying with them, yes? Have they..?" She trails off, scanning you again. You realize she's looking for injuries.

"No," You quickly assure, "They haven't hurt me." Not physically, at least.

Momo nods, looking relieved.

"But...they've kept me here. They won't allow me to leave. There's no way to leave." You let out a mirthless chuckle before staring back at Momo. "Can-can you help me get off the island? Please? I'd-I'd really like to go home."

The three mermaids look at you in pity while Momo bites her lip, her eyes flash with an emotion you can't place. It looks familiar.

"Help!" Mina exclaims, looking around her, "We help! Yes!"

Momo titters at her, effectively hushing her. The four murmur together in a language you will never be able to understand. Mina looks confused at Momo's voice, glancing back at you in what looks like worry. Ochako beams. Tsuyu nods. For some reason, you suddenly feel like you're back in the camp, surrounded by the titters of the naga.

But it's different. They'll help you.

"We will help you," Momo confirms her mate's words, "There's a human island not far from here. I see ships coming and going every so often. Perhaps you can get help there."

Your heart flutters at just the thought of seeing other people again. Then, you frown.

"I...can't get into the water," You admit, "I can swim, but it won't be enough to get me to the island."

"That's why you'll have us," Momo offers, "We can let you ride our backs. It won't be a long trip, just thirty or so minutes."

Your heart soared, and you felt like sobbing at their graciousness.

"Really?" You ask, not believing it, "You'll help me?"

"Of course," Momo croons, "We would absolutely love to help a pretty thing like you."

She reaches out, seemingly to caress your face, before frowning when she fails to reach you.

"You must get into the water now," She urges, "We must go."

You blindly agree, about to jump in her arms, when something makes you pause. The sudden tale of sirens pops into your head, how they lure in sailors and devour them.

Momo never quite confirmed what they were.

You retract your hand, not quite shifting away. Ochako frowns in disappointment. You can't help but think it reminds you of a cat losing its prey.

"What's the island called?" You ask stumbling for your words, "The locals. What-what do they call the land? What language do they speak?"

Momo smiles, but frustration flashes through her eyes.

"I've never really gone close to fully inspect," She casually drawls, "But I'm sure they'll find ways to accommodate you, even if they don't speak your language."

Her voice was sickly sweet.

You can't trust Momo. You can't trust Ochako. You can't trust Tsuyu. You can't trust Mina. No matter how sweet they seemed, how eager they seemed to help, you couldn't get into the water with them.

But you couldn't stay here. You couldn't stay on the island where the Nagas were searching for you.

At least you knew what they were planning on doing with you. The monsters you know are better than the monsters you don't. No matter how pretty they were.

"Come here," Ochako rasps, pulling forward with wide eyes. Her eyes had lost the warmth.

"Or Tsuyu sing song."

You don't get the chance to figure out what that means. A hand grabbed you, pulling you back into a hard chest. Above you, Shouto hisses into the water.

Ochako hisses back, far more animalistic than you ever thought someone like her to be. Mina and Tsuyu looked just as aggressive as they glared at the Naga who gripped you. Momo only blinked, turning to Katsuki who appeared beneath the canopy, Eijirou and Izuku flanking him.

"You're here," She clicks her tongue in obvious distaste, "I thought we'd have more time. How unfortunate."

"Our mate," Katsuki growls with conviction, "Ours. Not yours to take."

The four form a protective shield against you and the mermaids. You don't know whether to feel relief or dread at their arrival. The mermaids try to slink closer as if to attack, but Momo stops them with a small click. She sighs.

She calls your name sweetly. The nagas stiffen, but you peek over them, catching her gentle look.

"I'm afraid we ran out of time today." She smiles. "You must be off now. I hope you visit us soon."

Mina lets out a heartbroken moan, pushing past her mates to get to the shore.

"Leave?" She whines, "No go. No go."

You watch at her pitiful attempt to get out of the water in an effort to reach you. Her tail shows again, pink, sparkling in the sun. Tsuyu is the one who gently pulls her back. Mina sobs in her mate's arms as she continues to watch you.

At her response, Eijirou gives an aggressive growl, stalking up to her. It's Izuku who titters him back.

Momo tilts her head at your frozen stature, "Go on, now." She gently urges.

You give a small nod, letting Izuku push you away from the water. Eijirou shuffles in front of you, clearly checking for any injuries. Katsuki and Shouto angrily click in their language. Tentatively, you glance back at the water, finding the four mermaids still perched at the shore.

Their eyes never leave your figure until you break through the canopy. And even then, you have a feeling you hadn't seen the last of them.

#yandere #dark content #yandere bnha #yandere mha #x reader #naga au #mermaid au #naga bakugou #naga kirishima #naga deku #naga shouto #siren ochako #siren momo #siren mina #siren tsuyu #isolation #forced captivity #forced relationships

462 notes · View notes