— careless mistake
▸ 18+ mdni.
| pairing. brother!wooyoung x fem!reader
| warnings. incest, voyeurism, inexperienced!reader, innocence kink, wooyoung's really gross but he's lowkey in love so it's okay. don't like it, don't read it.
a.n.: first time writing for ateez so me scared. idk if i like it but it is what it is.
based on this request.
wooyoung didn’t mean to peep. not really.
he was just going to do a quick stop at the bathroom, then brush his teeth, and go back to his overwatch game. but as he passed by your room, door slightly ajar, he heard small noises that made him pause. the crack was just wide enough for him to look inside and see you under the covers, laptop on your lap.
at that moment, he should’ve quickly drawn his gaze away, but he instead found himself staring, watching. there’s no denying in what you’re doing; the movements he can see under the covers is your hand between your legs, touching yourself. it’s also obvious what’s playing on your laptop. maybe you thought the sound would be low enough for nobody but you to hear it, but wooyoung can clearly decipher moans and wet slaps coming out of your speakers.
he never thought he’d ever catch you in such a private moment, one that he knows he shouldn’t be silently looking at. or enjoying. it’s one thing to catch his sister masturbating, but it’s another to keep watching.
he should be ashamed, embarrassed. but he’s not. he feels the heat dipping down his neck, swirling at the bottom of his stomach, blood rushing down to his cock.
he’s hard.
fuck.
he licks his lips, hand instinctively going to his sweats, gripping his cock. he sees you shifting on your bed, whining a little. it’s almost agonizing how stiff he is, he can’t believe it. for a moment, he imagines himself on top of you, between your legs, stroking his cock over your wet pussy. you’d moan his name loudly, clearly liking it, too, but begging him not to push in, it’s wrong, he’s your brother—
wooyoung doesn’t realize the groan he lets out until your eyes suddenly snap in his direction, your mouth opening in shock, shame written all over your face.
you shut your laptop and get up off your bed all in one second. “shit,” he says, cursing under his breath, but before you can close the door on him, he slips himself into your room.
“wooyoung…!” you whine, forced to step back as the space in your room is too cramped with your brother now inside. your cheeks are burning, hands trembling by your sides. “get out,” you cry.
you sound so desperate—he doesn’t think he’s ever seen you so embarrassed before. fuck, you’re so cute.
“no, no, i’m sorry-” he begins, cooing softly at you, “i just wanted to check on you,” wooyoung explains, but it only makes you look away in shame, avoiding his gaze.
“i’m fine. now, leave!” you hurriedly say, grabbing his arm and pushing him back, but he resists, placing his hands on your hips.
he clicks his tongue, “don’t be mad at me, baby.” he frowns, blond strands of hair framing his forehead. his hands on you make you throb, feeling his hold slightly tightens as he speaks to you.
“‘m not,” you grumble, pouting, “just, leave… please.”
“hey, com’on,” he says, pulling you a tiny bit closer to him—he wouldn’t want to scare you away already. he glances behind you where your laptop sits on top of your bed. “what were you watching?”
then, you visibly tense up, the word stumbling out of your mouth, “n-nothing!”
“don’t lie,” he tuts, eyes fixed on you. you’re so afraid of being filthy—his cute little sister isn’t as innocent as she seems to be.
“wooyoung, seriously!” you whine, almost stomping your foot.
he smiles, “just show me. you’ve got nothing to hide, huh?” you hesitate, still looking away from him, so he brings you to your bed, sitting down with you near the headboard.
you bite down into your bottom lip before picking up your computer, fingers stilling around the lid before you pull it up completely, the video starting up to where it got interrupted. you don’t look, preferring to hide your face behind your hands and your heart beats faster, totally embarrassed.
when your brother’s eyes fall on the screen, he feels his cock twitch in his sweats. the mere thought of you watching and enjoying something this gross makes him go crazy.
it’s a homemade video of a couple having sex in bed, a close up of his cock thrusting inside of her. she’s covered in cum and despite being both out of breath, they keep going, squelching noises filling up the room.
wooyoung is amazed, he couldn’t be more pleased with what he’s seeing.
“that’s what you like?” he asks, grinning. you groan in response and he pulls on your wrists, uncovering your face. your eyes reluctantly meet his. “hm? you like to touch yourself to that kind of stuff?”
“sometimes…” you mumble.
“little pervert,” he murmurs, taking a hold of your chin and bringing your mouth inches away from him. he looks at your lips, and it’s silent for a second, the air heavy between you two, the tension palpable.
then, your brother kisses you, capturing your lips hungrily, slipping his tongue in your mouth. your moans are muffled, both surprised and aroused, sharing the messiest, most passionate kiss with him.
his relationship with you has never been totally innocent, he’ll admit. he can’t count the number of times people thought you were a couple and the surprise on their faces when he told them you were siblings always made him feel some type of way. you always hug longer, talk to each other gently, almost lovingly, and the touches he pretends to be accidents…
he wants you—in the way a brother shouldn’t. but he knows you want him just as much, so why should he care about what’s right and wrong? he won’t lie to you, even less to himself.
you gasp into his mouth when you feel his hand dipping below your night shorts, slipping under the band of your panties. his middle finger finds your clit and he slowly draws circles on it, making your toes curl. he detaches his lips from yours, and the way you look at him with stars in your eyes, like you’d let him do anything he wants to you, confirms everything he needs to know.
“wanna try it out with your big bro?” he asks against your lips, and dumbly, without a thought behind your eyes, you nod your head.
the video ended a long time ago, but it feels like you’ve just gotten started. you don’t want it to stop, ever. it feels too good.
wooyoung’s hips snap against yours, sloppy and slow—deliberately slow. he wants to hear the sound of his skin slapping yours each time he bottoms out, your pussy gushing out around his cock, making a mess of the bedsheets. your legs are locked behind his back, keeping him close to you.
he can’t think about anything else other than your walls hugging his cock tightly, so deliciously good. who would have thought your pussy would feel this good around him? he only fantasized about it before, but now… now he doesn’t think he’ll be able to hold himself back anymore.
“you’re perfect, fuck,” he breathes out, his hands on either side of your head on the mattress, glancing at where your two bodies connect, where his cock disappears into your pussy.
“wooyoung, please,” you cry, running your hands over his back and scratching his skin with your nails. “want you…”
“i’m yours, baby,” he says a little too simply, like it’s always been the case, like there’s no questioning it. “you have me,” he coos.
he can’t get enough of you, of the way you cling to him, of your voice crying his name like it’s the only thing you remember. the more he fucks your pussy, drives his cock into you until he feels the coil in his stomach tightening, the less he cares about how wrong it is. because right now, he only feels so fucking good.
“shit, i’m gonna cum…” he announces and he feels you clenching around him, a small whine leaving your lips. for the first time, he decides to be responsible and pulls out of you, furiously tugging on his cock until his thighs tense up, cumming all over your tummy. “oh, god…” he hisses, painting you in his white cum.
he slaps his cock on your pussy and circles your clit with his tip, your legs shaking on either side of his waist. “wooyoung,” you whine, but he shushes you.
“my baby did so well f’me…” he praises, “i think she deserves a reward, doesn’t she?”
















