Oh, Sweet Child of Mine (Marco +18 AU End)
Main series, this is an AU ending specifically shipping Yandere Marco and Reader-insert. The rest of the series presumes platonic feelings on all parties, mainly between the Whitebeard Crew and Reader-Insert.
Warnings: Yandere behavior, possessive behavior, forced drinking, heavy kissing/touching, grinding, uhhh sorta monster fucker vibes cause Marco is low-key transforming the whole time, explicit sex (non-specific reader receiving). Dub-con vibes. If any of this makes you uncomfortable, please do not read. Also, do not tolerate any of this behavior in real life unless that's what you're into and it's agreed upon beforehand.
Stay safe and have fun.
Word count: 2,817
@cyborg-franky (as requestor and connoisseur of Marco)
You’d never actually stuck around for any of the parties that happened periodically on the main deck. While not an every night affair—the booze bill alone would bankrupt them after a week—it was a fairly regular occurrence. And as per your ‘grounding’ you were firmly planted in the middle, revealing the horrible truth.
You had no fucking idea what to do at a party.
As a kid, the most you saw were birthday parties with other kids. And as a marine well, you certainly were never invited to one of those for one reason or another. And of the few you did see, they were tame affairs with everyone nervously sipping booze trying to get drunk enough to forget a high ranking member was there but not so drunk they’d do something stupid. Your current partner doing their best to be the biggest jackass in the room. Maybe the wild parties happened after, you weren’t sure.
Thankfully, you were more relaxed than when you were first brought on board, otherwise the amount of times you’d been dragged into a side hug would have spurred you to do something drastic. Like bite people or scream. Your mug still mostly full as you had no desire to get drunk or get a hangover in the morning. You gave Thatch an awkward smile as he settled down next to you again with a laugh.
“Good to know you never liked parties and it wasn’t just where the party was happening that you took issue with!” Thatch cackled, throwing his arm over your shoulder as you mumbled incoherently into your mug. His smile softened as he leaned into you a little more, whispering into your ear. “You know, you could just go to bed. No one was that serious about grounding you. Although, usually grounding just means you can’t go on missions—which you’ve never been cleared for to begin with.” You huffed, unable to help yourself as that small, bitter feeling pooled in your chest.
The feeling of being small with no options but shit choices in front of you.
How freely did you really make your decision to stay? If you knew damn well it was the only one they’d let you take?
You were never one to dwell on things you couldn’t control, but this really did stick in your craw. Maybe because it affected everything you did. At all times.
What reason did you have to stay that wasn’t because they made you?
You remembered the relieved sound of Ace and Marco’s voices when they found you again. Wrapped in bandages and healing slowly, they held you gently but desperately. Like you’d break if they looked away. Marco’s eyes fixed on yours as he rested his forehead against your own. Like you were the only thing he needed to see.
He took every opportunity to hold onto you on the way back. Hands resting against your skin, fingers twitching around the curves of your body. Like he was moments away from pulling you into him and never letting go. A trill deep in his throat when you happened to lean back against him. Taking the chance to lead you by hand around islands as they searched for an optometrist while Ace scouted around excitedly, babbling about good food and possible frames you could get. Always advocating for eye searing colors while Marco chuckled, squeezing your hand.
“Oop. Looks like someone wants your attention.” Thatch mumbled into your ear. You looked up, eyes sweeping over the energetic crew as they all threw themselves into small competitions and loud conversations. “Nope. Up.” You turned your head, finally following Thatch’s gaze to find bright blue eyes cutting down through the darkness. Glowing softly as your heart stuttered.
Heavy gaze fixed on you as Marco sipped from his own cup lazily. Like he was stalking you and deciding the merits of taking flight to grab you in his talons or just diving down to pin you in place.
“…Ya think I’m in trouble?” You asked softly, a little worried as it had been a while since Marco looked at you like you were prey. Thatch squeezed your shoulder with a low, throaty laugh.
“Maybe if you keep ignoring him.” You grimaced and handed Thatch your mug, not confident in the least that you’d be able to hold onto it while climbing up to the crow’s nest. Thatch eagerly downed your drink and eyed the nearest arm-wrestling contest with a smirk, giving you a wink before walking off with loud cheers as he set to thoroughly beating his brothers.
You gripped the ropes as you steadily made your way up, Marco watching every motion with an intensity that made you increasingly nervous. But still, you knew running off would just… well, maybe not piss him off but certainly not help whatever mood he was in. In fact, you had a feeling that running would just make it worse. Whatever this was.
You huffed as you reached the crow’s nest, hands gripping the sides as you prepared to lift yourself up into it.
Marco’s hand skimmed over your cheek, palm tipping your head up at him as you stared breathlessly. Fire flickering in his eyes as his power rose closer to the surface. Blue licking between his sharp canines from the back of his throat as he smiled sweetly, predatorily. Like he was excited about how many ways he could eat you alive. Like he could already taste you on his tongue.
You froze, uncertain if it was wise to get any closer than you already were, high up in the air and away from help.
“You’ve come this far, bluebird. Join me.” Marco purred, the sound vibrating unnaturally in his chest. It wasn’t a question. It was a command. As sure as you were standing there, you knew that if you tried to turn back now, he’d just pull you into the nest anyway. If you could have ever turned back to begin with. His hand, hot and steady, slipped down your neck and shoulder. Caressing your bare arm as he fixed his grip around your wrist. He pulled gently and you followed, climbing into the nest with your eyes locked in his gaze.
He set down his mug and slowly ran his hands up your arms until his palms came to a rest against the sides of your ribs. Almost measuring your shallow, unsteady breaths. Then down to the hem of your shirt to slip back up again, teasingly stroking your skin as he grinned. He pulled you in closer, hands pressed into your spine as he lowered his forehead to yours.
His blue eyes were lined with gold, the pupils softening to a predatory, avian shape. Your breath caught in your throat as you were pinned in place.
“You barely touched your drink.” Marco trilled, fire licking your lips like scraps of silk. “Aren’t you thirsty, bluebird?” The air was frozen in your lungs.
Your response difficult to pull out despite the simplicity of your words.
“N-Not really.” You replied breathlessly, his eyes narrowing instantly. “Marco.” You said, mild panic flooding your body as you hoped that was all it took to soften the tension in the air.
If anything, it got worse.
Blue and gold embers crowding the space between you as he gave a low hum that settled in your bones. One of his hands slipped away.
His gaze remained on you as he pulled back, the cold, wet, rim of a mug pressed against your lips. The smell of booze heady in your nose, making you jerk back.
Marco frowned, an unhappy chirp jerking free from his chest as his other hand left the bare skin of your back.
He cradled the side of your head, his thumb pressing against your jaw firmly as he leaned over you more. Bearing down on you as he tipped your head back for the booze to spilled down your throat and the sides of your mouth. It was strong and burned in your chest.
You whined, nearly choking as you pressed your hands against his chest, heartbeat steady despite watching you take the contents of his mug.
The mug fell from his hand, completely empty as you gasped for air, choking around the burn in your throat. It was then that he struck.
Tongue hot against your collarbone as he chased what spilled up your throat and jawline, groaning into your ear as he licked the corner of your lips. Thumb still forcing your jaw open as he slid his tongue against yours. Chasing the taste of booze and your overwhelmed moan.
A sound too raw to be human vibrating in his chest as he kissed you, eyes hungrily watching as yours fell shut. It sounded like deeply carnal satisfaction—as though he was finally getting the chance to eat you whole like he craved. Hand fisted in your hair to keep you in place as he lapped at your lips, giving you mere moments to gasp for air before stealing that away again. Your heart pounding in your chest as you collapsed against him. Hand settling under your ass, nearly slipping between your thighs as he let you fall down as his own pace. Back gently falling to the floor.
He slot his thigh between yours, grinding you against the thick muscles as you moaned against his tongue. Drool—his or yours—dripping down your throat from the messy way he devoured you.
He pulled back suddenly, panting as he licked his lips with a hungry smile as you gasped for air, shuddering underneath him.
“Look. At. You.” Marco cooed as he leaned down to lick and nip your trembling lips. Tongue tasting your whimper before pulling back, a thick, golden string snapping as he swallowed hard. “Right where you belong. My pretty, little bluebird.”
“M-Marco?” You gasped, trying to steady your racing heart as his hand under your ass kept grinding you against his thigh. He clicked his tongue mockingly, kissing your forehead chastely as he pulled your shirt up higher.
“Shhhhh~ bluebird. No more words.” He whispered teasingly against your hair as he pinned you in place with his hand on your stomach. “I want to hear how a caged bird sings. You’ll show me, won’t you~?” Marco trilled, the whites of his eyes now gold as his pupils glowed with flickering phoenix fire.
Your body was now unbearably hot, your hands unable to push at his chest, just cling to him as you shuddered. A soft whine slipping from your throat as you tried to look away from him.
He laughed into your ear, nipping at the exposed skin of your neck.
“My pretty bird. I clipped your wings to keep you safe, you know. I’ve always been so weak for soft, pretty things. And you just keep getting softer.” Marco praised, his hand turning to tease top of your pants. “Show me how soft you can be and I’ll show you how sweet it is to be my bluebird. Cage and all~ I’ve always wanted a songbird to sing for me~”
Marco trilled loudly, slipping his tongue back between your lips as his hand went lower. Cupping your hottest place with a heady groan as you gasped, arching against him.
The crow’s nest was bright with floating embers like fireflies as your eyes watered. Tension growing in your body as you moaned, pinned in place as he chased your reactions. Teasing and kissing your heated body. Watching you with burning eyes as he toyed with you.
“M-Marco~!” You sighed, heat overcoming you in a wave of pleasure. Heart thundering in your chest as you panted, shuddering beneath him dizzily. Your pants were slowly dragged down, eyes reluctantly opening to look at Marco.
He licked his lips, taking in every inch of exposed skin before looking at you with a feral grin.
“Keep singing, bluebird. I’ve got so much more to give you.”
He licked his fingers, leaving a thick coating of gold spit before freeing his cock, the hairs partially flame as he fisted his length. The tip oozing pearly precum as he moved in closer. Kissing up your damp skin until he was between your thighs. The head smearing over your rim as he gripped your sides. Lifting you up as he slowly slid inside you.
His body rippled with phoenix fire as you gasped, spine arching as he stretched you out, pain fleeting as his power chased it away. Leaving you feeling overwhelmed and full as he pinned his thighs against your ass. His shuddered, a soft trill echoing off the confined space. Feathers spontaneously forming over his arms as he cradled your cheeks. Damp lips melting over yours as he rocked against you. Driving himself deeper as you clenched around him.
You moaned, swallowing hard around his tongue as something wound around your calves. Squeezing as they were lifted up higher. Marco’s cock splitting you open as he rut against you harder. Soft, wet smacks muffled under the sound of you both crying out. His body bending you under him further as he pinned you in place.
You came with a gasp, shuddering and keening as he nipped your lips. Thighs wet and trembling as he followed quickly with a deep, satisfied groan. The lights dying down as he panted hard, forehead pressed against yours as he licked your messy lips erratically. His eyes still glowed softly when he opened them.
He kissed you again, just a soft brush of your lips as he finished inside you.
Gently, as though remembering only now how fragile you were, he lifted you up into his lap. His cock still deep and hard inside you. Pinning you to his chest as he littered your face with soft kisses.
“The prettiest songbird I could ask for. Sweet and so soft for me~” Marco sang, fire still licking from his throat. “My little bluebird~ You can never leave me, don’t you know~?” Marco sighed with a sharp smile, gold flickering at his lashes as he squeezed your hips in warning.
Breathless and dizzy—from the booze, his ravenous kisses, or the way his cock still throbbed inside you, you didn’t know—you swallowed hard.
“…I know.” You whispered, closing your eyes as he kissed your cheek, rocking your hips against him. He tipped his head sharply with narrowed eyes, leaning forward to coo against your lips.
“And why is that, bluebird~?” He crooned dangerously, tongue flickering against your open lips. “Tell me why you’re never going to leave me~”
Marco sensually fucked you on his lap, trills vibrating your lips as he grinned wider.
“’M-Mm y-yo—ahhn~yours! I’m yours! M-Marco~!” You whimpered softly, heat building as you threw your head back. Breathing hard as his pace never faltered or slowed down.
Marco leaned against your arched chest, curling over you until his face was all you could see. Hand threading through your hair as he gave you a heated look somewhere between pity and pleasure.
“That’s right, my pretty songbird. You belong with me.” Marco pulled sharply on your hair as he grit his teeth, bouncing you harder on his cock suddenly, driving the air from your lungs in a sharp keening sound. “I’ll find you anywhere you try and run. Chase you to the ends of the earth until you’re right. Here. Singing that pretty song for me as I drive any silly thoughts from your head. Fucked stupid and weak on my cock as you should be. Love me, bluebird, and you’ll never need to think about your cage.”
You gasped for air, shuddering hard as you came with a breathless scream. Everything cutting out as you fell apart on him. Scattering like embers from a sacred fire.
You came to, bleary and weak in the dark. Arms wrapped around your naked waist under a thick blanket. Soft breaths wafting over your bare neck.
You moaned a little, stretching out against a toned body behind you.
“…Marco?” You asked blindly.
There was a gentle nip on your skin.
“Go back to sleep, bluebird. You can sing for me again in the morning.” You flushed as the low, gruff words. Marco’s arms pulling you in closer.
You squeezed your eyes shut, no less confused than you were hours ago at the party.
You felt trapped. Treasured. Loved and confined.
Like you were the only thing that mattered but you didn’t matter in the least.
It hurt and confused you but… in a strange, sweet way.
It…
It was okay to feel this way.
You turned into Marco’s chest, burying your face and tears.
Loving him was just… overwhelming. His arms tightened around you, rubbing over your back as he trilled into your hair.
“Easy, songbird. You’re safe with me.” Marco cooed.
And you accepted his reassurance. Knowing that, one day, you’d believe it too.
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