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katsserafim · 25 days ago

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ON IT🫡

request: g!p yunjin x subby bratty 6th member reader + i kinda made you guys hate each other in this... what's better than enemies to lovers heh.. let me know if i missed something anon!!

i was gooning while writing this... i thought i should let yall know🥹

cw: degradation (bitch, slut), u give unnie a bj then she fucks you, she slaps you, she bites your shoulder wc: 2.06k

You’re halfway onto the dorm kitchen counter when Yunjin walks in.

Of courseeee, of course it’s her and she has to walk in that exact moment.

You hear the sigh before she even speaks, and you know exactly what face she’s making without turning around, that pinched expression, all jaw tension and narrowed eyes, like she’s two seconds away from filing a formal complaint to management. “You’re seriously doing this again?”

You hum, unbothered, letting your legs dangle off the edge. “Good evening to you too, unnie.”

“I’m not in the mood, Y/n.”

“You never are. That’s part of your charm.”

Yunjin walks past you, snatches a protein shake out of the fridge, and shuts the door with a little more force than necessary. You catch the way her shoulder tenses, and for some reason, it makes you smile.

“I need the almond milk,” you say sweetly.

She doesn’t even look at you. “Use your legs.”

“I’m short.”

“Well isn't that tragic.”

You tilt your head, faking innocence. “But you’re so tall and sooooo helpful!! Wouldn’t it just make your day to do something nice for your teammate?”

She finally turns then, slow, deliberate, and levels you with that look. That sharp, unimpressed, I’m this close to drop-kicking you look.

“Why do you always start with me?” she asks, tone flat.

“Because it’s fun.”

Yunjin laughs. It’s humorless, barely more than an exhale. “You’re exhausting.”

“And yet, here you are, still talking to me.”

There’s a pause, just a second too long, where neither of you says anything. The air feels tight and charged, definitely not in a good way, not in a soft, flirty way either. It’s sharp, bristling.

You hop off the counter slowly, closing the gap between you with deliberate steps. Close enough that you can see the twitch in her jaw. “You’re not gonna get rid of me by pretending to hate me, y’know.”

She scoffs. “I’m not pretending.”

You smile, too wide to be sincere. “Sure, unnie.”

────୨ৎ────

You’ve been in LE SSERAFIM for just nearly a year, a late addition to the tight knit group, and already half the fandom thinks you and Yunjin want to kill each other.

The other half thinks you’re secretly hooking up behind closed doors.

You’re not, (unfortunately for the two of you.)

The reality is more complicated. She’s sharp, you’re sharp. She hates how loud you are, you hate how self-righteous she is. You poke, she snaps. It’s a cycle, an annoying routine.

It’s also weirdly addictive.

She’s the only one who doesn’t fold when you start acting up. The others laugh you off or play along. Yunjin just glares and tells you to shut up, and well, you kind of like it.

Not in a nice way… more in a grab her face mid-argument and see if she flinches kind of way.

────୨ৎ────

During practice, you “accidentally” switch your water bottle with hers.

She doesn’t notice until she takes a sip and gags, and you make a stank face while turned away because why is she gagging…?!

“Seriously, Y/n?” she glares.

“Oh no,” you deadpan. “Was that my bottle?”

She wipes her mouth with the back of her hand. “You’re disgusting.”

You smile with teeth, cackling. “Want another sip, unnie?”

Chaewon calls a five-minute break before someone gets slapped.

────୨ৎ────

Later, after everyone’s gone quiet in the dorm, you creep into the kitchen again. It's 1:23 a.m. You’re not even hungry. You just like the silence.

Well, until she walks in, of course. Again.

“Let me guess,” you say, not even looking at her. “You sensed I was having a peaceful moment and came to ruin it.”

Yunjin doesn’t rise to the bait. Just grabs a glass and fills it from the sink.

“You’ve got issues,” she mutters.

You lean against the counter, arms crossed, eyes half-lidded. “Takes one to know one, unnie.”

“You think everything’s a game.”

You push off the counter, slowly approaching her. “And you hate that you can’t stop playing.”

She turns toward you then. Her eyes are dark, unreadable. There’s a pause, again, that silence that stretches just a little too long.

“You’re lucky you’re in the group,” she says, voice low. “Otherwise, I wouldn’t deal with you.”

You raise a brow. “Funny. You deal with me an awful lot for someone who supposedly can’t stand me.”

Her jaw clenches. “You think I enjoy this?”

“I think you enjoy being mad at me,” you murmur, stepping just close enough that your shoulder brushes hers. “Feels better than admitting you don’t know what to do with me.”

Yunjin holds your gaze. Doesn’t move. Doesn’t flinch. “Don’t flatter yourself, Y/n,” she says coldly. And yet, she doesn’t move away.

You stare at each other in the dark kitchen for another beat, both too stubborn to look away first.

Eventually, you smile again, slow, dangerous smile. “Goodnight, unnie.”

You brush past her on your way out, deliberately letting your hand graze her waist as you go, leaving her quiet. She doesn’t say a word.

But you know she won’t stop thinking about it, so you decide to trigger her one last time, and you shouldn't have done that (you should’ve done it earlier if you knew she was gonna snap the way she did).

────୨ৎ────

You plan something fun, something that you believe Yunjin would get angry at. You lean just a little too close to the male stylist, laughing at some dumb joke he made, placing a hand on his arm as you giggle like you don’t see the way Yunjin is watching you from across the dressing room.

You definitely see it, heat rising in your lower stomach at the way she’s staring at you.

She’s pretending to scroll on her phone, one leg crossed over the other, but you know her too well now. That sharp flick of her eyes. The way her fingers are drumming on the armrest like she’s holding herself back from throwing the nearest object. Her jaw clenched so hard it’s practically carved from stone.

You press your tongue into your cheek to hide your grin.

A little more. Just a little more, and she would snap. You ask the stylist to fix your shirt, practically pushing your tits in his face when—

“Y/n,” she snaps, sharp as glass. You glance over innocently. “Yes, unnie?”

“Get over here.”

The tone makes the stylist step away like he’s just been caught doing something illegal. You take your time walking over, all slow steps and sugar-sweet smiles, because if she’s gonna yell, you at least want to earn it.

“What’s up?” you ask, blinking like you didn’t just flirt with someone in her line of sight for five minutes straight.

Yunjin stands. It's like her anger gave her another few inches, because she looked taller (and hotter). And right now? Pissed.

She grabs your wrist and yanks you down the hallway, past stylists and makeup artists and assistants who all look away politely, as if they didn’t just witness the sexual equivalent of a bomb ticking.

“Yunjin,” you sing under your breath, “people are gonna think we’re sneaking off to make out.”

She doesn’t say anything.

She doesn’t have to, because the look in her eyes is louder than anything she could possibly say.

She pulls you into an empty dressing room and shuts the door with a slam. You have exactly two seconds to say something before she’s pushing you up against the wall, both hands braced on either side of your head.

The tension doesn’t crack. It shatters.

“Y/n? Really? Are you trying to piss me off?” she demands, voice low, shaking with something just under the surface.

You blink up at her, lips twitching. “Mmm. Maybe.”

Her eyes narrow. “You think it’s funny?”

“I think you being this mad over a stylist fixing my clothes and doing HIS JOB… is very funny.”

Her hands slam the wall. You flinch, but not in fear, but in thrill. “You don’t get it,” she says, voice rough. “You never get it.”

“Then explain it to me.” Yunjin stares you down, chest rising and falling too fast. Her hand moves, cups your jaw, roughly, like she’s thinking about shaking you. Or maybe kissing you. Or both.

“You walk around like everyone wants you,” she hisses. “You act like nothing touches you. Like none of this means anything.”

You smirk. “And yet here you are, pressed up against me, heavily breathing like you want to eat me or something.”

“I hate you, Y/n,” she spits, and you only laugh at that comment. “Liar.”

She freezes. You lean up, closing the last inch of space between you. Your voice drops to a whisper.

“So this is what it takes to make you touch me?” Her hand tightens on your jaw. “Yunjin—” And then she’s kissing you, hardly, messily and angrily.

It’s not romantic, it's not gentle. It’s the kind of kiss you’ve both been too proud to admit you wanted, all teeth and heat and months of shoved-down feelings exploding at once.

You gasp against her mouth, and she uses it to slide her tongue against yours like she’s punishing you for every smug smile, every flirtatious eye-roll, every whispered “unnie” that drove her insane.

“Get on your knees,” Yunjin commands. “Since your attitude is so fucking awful, you won't be able to walk straight for a week.”

She unzips her jeans while standing in front of you, her dick hard and throbbing. “Open wide,” she commands. You open your mouth, and she pushes your head down onto her shaft. She grabs your hair, holding you in place as she thrusts into your mouth.

“Fuck, your mouth feels so good,” Yunjin groans. She pulls your head down further, fucking your throat. You gag and choke, saliva mixed with precum running down the side of your neck, but she doesn't let up. “That’s it, take it all,” she moans, “you were made for my cock.”

She pulls out and slaps your face hard. “Now it's your turn,” she says, running a hand through her hair. You got up, and Yunjin pushed you onto your tummy over the table, kicking your legs open.

You look up at her, tears running down the side of your face, squealing when she pushes her knee into your pussy, grinding against it, before replacing the sensation with her fingers. “Yunjin… a-ahh… unnie…”

The unnie in question only laughs, grabbing your hair and yanking your head back, to watch you as she fucked her fingers into you, dick getting harder as your moans spilled out of your mouth uncontrollably.

“You're such a dirty slut,” she said into your ear, her breath hitting you. “If you wanted to fuck me, you couldve just asked instead of trying to constantly make my life hell.”

Yunjin pushes your face into the dressing table, her dick rubbing against your ass. “I'm going to ruin your tight little pussy,” she groaned. “You're mine now.”

She thrusts into you from behind, her hips slapping against your ass. “Fuck, you're so tight,” she groans. “I could fuck you all day.” She pulls your hair harder, using it as a handle to fuck you deeper. “Take it, you little slut. Take my cock.”

Her hand reaches around to massage your clit roughly, the other hand leaving your hair to squeeze your nipple. The combined feelings made you throw your head back, arching into Yunjin further. “Cum for me, Y/n,” your older member gasps. “I want to… hah, feel you… fuck..” her thrusts are faster now, harder, and more sloppy. She leaned in closer to bite your shoulder, muffling her moans. “Now, bitch, cum now.”

You can't hold back any longer. You cum hard, your pussy clenching around her shaft. Yunjin follows soon after, emptying herself inside you. She pulls out and leans down, her lips meeting yours hungrily.

You break the kiss first, barely, forehead against hers, breathless and smiling. “Still hate me?” you whisper breathlessly, and “innocently”.

“Don’t push it,” she mutters. You reach for her hand and press it flat against your chest. “Too late.”

Yunjin curses under her breath, then pulls you in again, this time, slower.

────୨ৎ────

later that night, in your shared notes app draft:

> things that get yunjin to kiss/fuck you:

being a brat

talking to literally any man

calling her unnie in that voice

letting her lose control.

add more later (🤭)

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