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chrissssssmut · 11 days ago

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Karina winter yeji yuna school smut?

AFTER SCHOOL

Karina, Winter, Yeji and Yuna x Male Reader

I should’ve known something was off the moment Ms. Shin smiled at me during homeroom. That too-sweet kind of smile teachers use when they’re about to ruin your afternoon.

"You’ve been falling behind," she said, tapping her red pen against a stack of missed assignments. "So I’m assigning you to a group for academic support."

My stomach sank.

She continued, writing names at the top of my worksheet with smooth, deliberate strokes.

"Karina. Winter. Yeji. And Yuna. They'll… keep you on task."

I blinked. Thought she was joking. But when I looked over to the corner of the room, all four of them were staring at me—smiling.

Not the friendly kind of smile, either.

Fast forward to now. The final bell has rung. The classroom is empty. Door locked. Blinds down. Lights dim.

And I’m sitting at a desk, laptop in front of me, surrounded by four girls who look like they’re about to pounce.

Karina stands behind me with her arms crossed, eyes half-lidded. Winter leans against the chalkboard like she owns the place. Yeji is seated right on my desk, legs swinging lazily, skirt hiked a little too high. Yuna is in the corner by the windows, playing with the buttons of her blouse.

Winter speaks first. Her voice is soft, cool. Dangerous.

"You're gonna open that laptop," she says, slowly walking toward me. "You're gonna finish everything on that worksheet. And you're not leaving until it’s done."

I open my mouth to protest, but she smiles.

"Unless," she adds, "you need a different kind of motivation."

My throat dries. “Motivation?”

Karina leans down behind me. I feel her breath on my ear before I even hear her voice.

“We’re very… persuasive,” she whispers, fingers brushing my shoulders. “But you have to follow instructions. Exactly. No excuses.”

“Okay,” I mutter, voice shaky. “I’ll work.”

Yeji chuckles and crosses one leg over the other, leaning in until her face is inches from mine.

“You’re gonna be such a good boy, aren’t you?”

Her fingers hook around the loose knot of my school tie. She yanks it gently, pulling me forward until my nose nearly brushes the lace trim of her underwear.

“We’ll make it worth your while,” she says, lips curling into a wicked smirk.

Across the room, Yuna lets out a breathy laugh. Her blouse is halfway unbuttoned now, bare skin peeking through.

“I hope you weren’t planning on leaving early,” she says, tossing her bra onto my open notebook like it’s just another school supply. “Because we’re not stopping until we break you.”

My heart is thundering in my chest. I open the laptop with trembling hands.

Winter moves behind me, sliding her fingers up under my uniform shirt. Her nails rake gently over my ribs, sending a full-body shiver up my spine.

Karina kneels beside my chair, her hands already at my belt.

She looks up at me with calm, unreadable eyes. “Let us take care of the distractions,” she murmurs. “You just type.”

My pants slide down. My boxers go next.

I barely get to the first question on the worksheet before Yeji grabs my jaw and turns my face toward her inner thigh.

“Finish the first page,” she purrs. “You get a taste.”

Karina’s lips wrap around me under the desk. I almost fall off the chair.

She takes her time, tongue working in slow, torturous swirls, lips soft but firm. My hands twitch on the keyboard.

“Don’t stop typing,” Yuna says, hopping up to sit on the desk beside me. She grabs my wrist and pulls it under her skirt. “But keep these fingers busy too, yeah?”

She moans softly as my fingers slip into her, wet and tight and so very ready.

Winter presses her chest against my back, her breath hot on my neck. “I’m going to ride you soon,” she whispers. “But if you cum before we say so…”

She drags her tongue over the shell of my ear.

“…we’ll start everything over from the beginning.”

Karina moans around my cock, her head bobbing rhythmically. Every time I twitch, she just sucks harder, like she’s daring me to lose control. Like she wants to see me beg.

“Focus,” Yeji says, eyes flicking down to my screen. “Get to question five.”

I’m drenched in sweat. Muscles tense. My brain is short-circuiting from sensation overload. I don’t even remember what I’m typing.

Winter slides onto my lap, lifting her skirt. No panties.

She sinks down onto me in one smooth motion.

I bite down a scream.

“You like that?” she whispers, hips grinding slow and deep. “You’re doing so well… but we’re not even halfway done.”

Yuna leans forward, tongue trailing a wet stripe up my chest, giggling as she sucks one of my nipples between her lips. Her hand stays between her legs, grinding against my fingers like a girl possessed.

Yeji’s rocking against my thigh now, one hand tangled in my hair, the other squeezing her own breast beneath her uniform. She watches me like a predator, drinking in every twitch, every gasp, every helpless moan I make.

Karina’s still beside the chair, stroking me every time Winter lifts herself up. Her hand moves in sync with Winter’s rhythm. Precise. Lethal.

“You’re going to cum soon,” Karina whispers. “Aren’t you?”

I nod, frantically, stupidly. I can’t hold on.

“No,” Yeji snaps, grabbing my face. “You wait.”

Winter tightens around me, grinding harder, her eyes fluttering shut. “Almost there,” she groans. “Don’t you dare cum until the worksheet’s done.”

I’m dying.

Everything burns. Everything pulses.

Karina strokes harder. Yuna moans louder. Winter rides faster.

Then Karina leans in, lips brushing my ear.

“Last question,” she says, voice honey-sweet. “If you get it right…”

Winter kisses me, full and messy and possessive.

“…we’ll let you cum.”

I slam the final key.

Everything explodes.

Winter cries out, clenching tight. Yuna throws her head back, riding my fingers until her thighs shake. Yeji bites her lip, watching me with wild, hungry eyes as I finally let go.

I cum hard, body wracked with pleasure, every nerve on fire.

Karina strokes me through it, slow and loving, like she wants to milk every drop.

The classroom is filled with panting. Moans. The quiet hum of my laptop.

I’m ruined.

Shirt half-off. Tie gone. Skin marked with lipstick and scratches. My legs are jelly. Brain fried.

Yuna giggles, hopping off the desk and adjusting her skirt.

“You passed,” she says.

“Barely,” Yeji adds, licking her lips.

Winter pulls away from my lap and kisses my jaw, her eyes dark and gleaming. “Don’t fall behind again.”

Karina tucks my shirt back in gently, then kisses my forehead like I’m some kind of good boy she’s proud of.

“Or next time,” she murmurs, lips brushing mine, “we won’t be so gentle.”

The Next Day

I didn’t even argue this time when Ms. Shin told me I’d be finishing today’s work in the library.

She gave me the same knowing smile, the one that sent a shiver down my spine yesterday, and handed me a thick packet of revision problems.

“Quiet place. No distractions,” she said.

Right.

By now, I knew better than to think I’d be studying alone.

And sure enough, not ten minutes into flipping through the pages in one of the back rows—hidden between the history section and some dusty old encyclopedias—I heard soft footsteps. The rustle of skirts. Giggling.

I didn’t even have to turn around to know who it was.

“You really thought you’d get away from us?” Yeji’s voice came first, teasing and low. “That’s cute.”

I looked up just as the four of them stepped into view, uniforms still perfect, but expressions anything but innocent.

Winter shut the book in my hands with a little snap. “Did you miss us?”

Karina knelt beside me again, just like yesterday, but this time she didn’t say anything. Just stared at me with that serene, unreadable gaze, her hand already sliding up my thigh like it belonged there.

Yuna leaned against the bookshelf behind me, stretching her arms over her head like she didn’t care who saw. "Ms. Shin says you need to improve your focus,” she said, licking her lips. “So we’re here to help.”

I glanced around the library. There were a few other students up front, maybe two tables away. The librarian’s desk was clear.

This was insane.

But the heat in my gut didn’t care.

“Guys,” I whispered. “We’ll get caught—”

“We know,” Karina murmured, fingers teasing the waistband of my pants. “That’s what makes it fun.”

Yeji leaned down and dragged her nails down my arm. “You’re already hard. Don’t pretend you’re innocent.”

Winter smirked and pulled a chair across from me, spinning it so she straddled it backward, arms resting on the top. “Here’s the deal,” she said. “You solve five problems. For each correct answer, you get a reward.”

“And if you get one wrong…” Yuna grinned wickedly, fingers playing with the edge of her skirt, “We punish you. Quietly.”

Karina’s hand slipped into my pants, and I choked on my own breath.

I tried. I tried to focus.

The first question was something about historical treaties. I scribbled an answer, hands shaking.

Karina stroked me slowly, watching my every reaction like she was cataloguing them.

Winter got up and circled around to my side. She bent down, her lips brushing my ear.

“Correct,” she whispered. “So you get this—”

Her tongue flicked against my earlobe. Then her hand dipped between my legs, joining Karina’s, making me twitch violently in my seat.

I gritted my teeth, eyes squeezing shut.

"Focus," Yeji sang from behind her hand, pretending to read a book. "You're making faces. They’ll notice.”

I forced myself to the second problem. It was barely legible now.

Behind me, Yuna crouched and slid her hand under the back of my shirt, her nails scratching lightly down my spine.

“Wrong,” she whispered. “You mixed up the year.”

She reached around and grabbed me harshly, jerking me once, twice—just enough to make me see stars—then letting go.

“Bad boys don’t get to cum,” she hissed.

“Third question,” Karina said calmly. “If you get it right, maybe we’ll let you taste one of us.”

I nodded frantically and filled in the blank. Something about revolutions.

Winter peeked over my shoulder and smirked. “Close enough.”

Yeji pulled her chair closer and lifted one leg onto the table.

“No hands,” she whispered. “Just your mouth.”

I looked around—no one close.

Heart hammering, I leaned forward.

Yeji shivered when my tongue found her, legs trembling as she bit her fist to keep from moaning.

“You’re good at this,” she gasped. “Fuck—don’t stop—”

Karina gripped my chin and pulled me back.

“Fourth problem,” she said coolly. “Let’s see if your brain still works with your mouth busy.”

I barely read it. My hands were shaking. I circled an answer and prayed.

Winter checked it.

Then bent down, lifted her skirt, and sat on my lap, no underwear again.

“I’ll allow it,” she breathed, sinking down onto me.

I choked back a moan as her warmth enveloped me, and she immediately began grinding, slow and cruel and tight.

“Don’t. Make. A. Sound,” she hissed.

The table shifted slightly. Books wobbled.

Karina looked toward the front of the library.

“Shit,” she whispered. “Librarian’s coming.”

Yuna moved quickly, yanking a nearby blanket someone had left draped on the study chair and tossing it over my lap. Winter stayed perfectly still, biting her lip hard.

Yeji opened a book and leaned forward, pretending to read with exaggerated focus.

Karina sat back against the shelves, legs crossed, innocent as a nun.

The librarian’s heels clicked closer.

“Everything alright back here?” she asked.

I froze.

Winter didn’t. Her walls clenched.

“Just helping him study,” Karina said smoothly. “He’s working hard.”

The librarian hummed. “Good. Keep it down.”

As soon as she turned and walked off, Winter exhaled hard against my neck and began to ride me again, slower now, deliberately cruel.

“You’re not cumming until the last question’s done,” she whispered. “And we’re all satisfied.”

Yuna climbed onto the table and straddled my chest, pulling my face to her dripping heat. “Make up for question two,” she said.

Yeji stroked herself as she watched me tongue Yuna open, her moans muffled against her arm. Karina leaned down and whispered filth into my ear, her hands tugging and teasing me every time Winter lifted herself up.

“I’m close,” Winter gasped. “Hold on—don’t cum—”

“I’m—shit—I’m gonna—” I couldn’t hold it.

Karina’s nails dug into my thigh.

“Don’t. You. Dare.”

Then everything blurred—Yuna came with a high, desperate whimper, Yeji followed moments after with a strangled moan, and Winter finally gasped my name as she pulsed around me, trembling.

Only then did Karina pull my face to hers and kiss me like she owned me.

“You did better today,” she said, stroking me slowly. “We’re proud.”

Winter slid off, carefully pulling the blanket back over my lap.

I was soaked. Spent. Fucked half-senseless.

Karina whispered, “You can finish now,” and stroked me just right.

I came so hard I almost saw white.

We cleaned up quietly—well, they did. I could barely move.

Karina kissed my temple.

Yeji fixed my tie.

Yuna tucked the worksheet into my bag.

Winter licked her fingers clean and winked. “Same time tomorrow?”

I nodded, dazed.

“Good,” Karina said softly. “Because next time…”

She leaned in, lips brushing mine.

“…we’re not letting you leave at all.”

It had been one day since the library.

One day since Karina whispered filth in my ear while riding me behind a bookshelf. One day since Winter, Yeji, and Yuna took turns teasing me to the edge with eyes locked on the door, waiting to see if someone—anyone—would walk in and catch us.

No one did.

But someone noticed.

“Come see me after class,” Ms. Shin said, sliding a post-it on my desk as she walked by.

No explanation. No expression. Just the quiet weight of her words and the way her eyes lingered on me… like she was studying a lie.

Karina leaned over from behind me. “She called you?”

I nodded.

“She knows,” Yeji said from the next desk, not even bothering to whisper.

“She suspects,” Winter corrected, looking too calm. “There’s a difference.”

Yuna, chewing on the tip of her pen, smiled lazily. “So what? She can’t prove anything.”

Karina’s fingers trailed up the back of my neck. “She doesn’t have to prove it. She just has to separate us.”

The idea made my stomach twist.

After the bell, I made my way to Ms. Shin’s office, heart pounding like a drumline. Her door was cracked open.

“Close it,” she said without turning around.

I obeyed.

She didn’t look at me at first. Just tapped her pen against a sheet of paper.

“I’ve taught here for eight years,” she said finally. “And I’ve never had a group as... close-knit as yours.”

I stayed silent.

“The four of them cling to you like satellites. Always orbiting. Always watching. And you… you’ve changed.”

“I—”

“Don’t lie to me,” she said sharply, cutting me off. “You’re distracted. Your posture, your eyes. You flinch when someone touches your shoulder. And your test scores are slipping.”

I clenched my fists.

“If something’s happening between you and those girls—something inappropriate—you need to tell me now.”

She turned toward me, eyes sharp and concerned.

“I can help you. I can reassign you. I can call your parents if you're too scared to say anything.”

“I’m not scared,” I said, too quickly.

“So there is something,” she murmured.

Shit.

I backpedaled fast. “No. I just meant—I don’t need help. There’s nothing going on.”

Ms. Shin leaned back slowly, searching my face.

“You’re a smart boy,” she said. “But you’re not a good liar.”

The room felt like it was shrinking.

“If I find out they’ve coerced you—”

“They didn’t,” I snapped.

That caught her off guard.

“They didn’t coerce me. It’s not… like that.”

“So what is it, then?” she asked.

I couldn’t answer. Because the truth was messier than anything she was imagining.

Karina walking into my room without knocking. Winter crawling into my lap with a hungry look. Yeji pinning me to a wall during break. Yuna whispering threats into my ear with a smile on her lips and her hand down my pants.

It wasn’t coercion.

It was obsession.

And it was mutual.

“I just want to focus on school,” I said, the lie catching in my throat. “That’s all.”

Ms. Shin looked unconvinced.

“You’ll work with me from now on,” she said. “No more group projects. No more ‘study sessions.’ You stay after school, here, under my supervision.”

“I—”

“That’s final.”

I left the office feeling like I’d been sentenced.

They were waiting.

Outside the classroom. All four of them.

Karina leaned against the wall, arms crossed, face unreadable.

Winter looked like she already knew what happened.

Yeji tilted her head. “How bad?”

“She’s pulling me from the group,” I muttered.

Yuna blinked. “She what?”

“She wants me working under her from now on.”

Karina stepped forward. “She’s trying to isolate you.”

Winter grabbed my hand. “That’s not going to happen.”

Yeji glanced down the hallway. “Where is she now?”

“She’s still in her office,” I said. “Planning whatever ‘private sessions’ she has in mind.”

Yuna smiled, slow and feral. “So we beat her to it.”

“What?”

Karina took my wrist, firm and final. “Storage room. Now.”

The door clicked shut behind us.

No light. Just shadows and breath.

Winter pinned me against the shelf first. “She wants to protect you?”

Yeji’s hands slid under my shirt. “She wants to own you.”

Karina was unbuttoning my pants already. “But she’s too late.”

Yuna pulled her skirt up. “We claimed you first.”

The girls didn’t take turns this time. They swarmed.

Hands everywhere—Karina’s mouth on my neck, Winter’s fingers around my length, Yeji licking up my chest, Yuna grinding on my thigh.

I tried to speak. Couldn’t.

“You don’t want her,” Winter whispered against my ear. “You want this.”

“You want us,” Karina hissed, sinking down onto me before I could even gasp. “Say it.”

“I want you,” I groaned, biting my lip to muffle it.

Karina rode me hard, fast, one hand clamped over my mouth while Yeji held my hips still. Winter and Yuna knelt below, licking and moaning, their tongues trailing over everything Karina left exposed.

“I’ll go to her office,” Yuna whispered between licks. “I’ll tell her to back off.”

Karina moaned. “If she doesn’t... we’ll make her.”

The climax hit hard and fast, Karina milking me dry while the other girls moaned, whispering about how they’d keep me hidden forever if they had to.

Afterward, they dressed me, button by button, fixing my tie like nothing had happened.

“She’s watching,” Karina said. “We know.”

Winter cupped my cheek. “She’ll try to separate us.”

Yuna kissed me softly. “Let her try.”

Yeji leaned close, voice like velvet. “If she takes you… we’ll take you back.”