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ggidolsmuts · 2 months ago

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Cheeky Icy Thong - STAYC Sieun

"Hi oppa!" Sieun's boyfriend opens the door at the welcome voice.

"Hey Sieun, come in!" The ever lovable girlfriend bounces through the door and kisses him.

"Did you miss me?"

"Of course!"

"I missed you too," she says, hugging him tightly.

"Mmhmm, should we go somewhere for dinner?"

"No, how about we just stay in and order? I just want to relax with oppa," Sieun says pointedly. He blinks once, twice, three times.

"Oh, um, sure, yeah."

Sieun lies in bed as she hears the rustle of plastic bags, her boyfriend picking up the delivered food at the door. Her head is lightly buzzing from her orgasm, but an annoying part of her wanted more—it was less "satisfying" and more "satiating". He kept asking her if she was feeling good, if she liked it. But he was asking too much! She did like it and she did cum, but Sieun couldn't bring herself to tell him that she wasn't "feeling" it, wasn't getting into it. Everything else about him was great, if she could just get him to be more assertive...

"Oppa, how do you feel when we do it?"

"Hmm? I like it, it feels good! You don't?" He suddenly looks at her, concerned.

"No, I do, I just think that we could have a more fun time." She grabs his hand, bringing it to her bare thigh. "Don't worry so much about me, you should do what you want," Sieun adds. She fully expected him to run his hand up her thigh, maybe go around to grab her ass and pull her closer, but no.

"Mm really? Okay, I just want to make sure you feel good." His hand almost insultingly goes to grab her hand, turning what Sieun wanted to be an intimate, maybe even passionate, moment into a sweet one.

"Sure oppa." Sieun would have to do more—part of that is her fault, she figures. She usually liked to be treated as a princess, and her boyfriend ticked that box well, ever thoughtful and loving to her. However, there is a small yet almost overpowering part of her that wanted the opposite, a little rebellious streak, the petulant part of being a princess—she wanted to see what he could do. If only she could make him understand that...

Somehow.

"Hi oppa!" Sieun lets herself in this time, bouncing into his apartment again.

"Oh, hey Sieun!" He looks up briefly, but only briefly before he returns to his screen.

"Ah it's so hot today," she says pointedly—rather than her usual tops Sieun is wearing a spaghetti top, showing lots of skin and a deep neckline. If only the idiot cared to look closely.

"Really? Even with that top?" *Damn it that's not the point!* "Make sure you use plenty of sunscreen!" Argh! Now Sieun's properly annoyed, showing this much skin only to have the wrong response from him, on top of now having to worry about her skincare!

"Let's just watch a movie," Sieun sighs, plopping herself down on the couch. A second opportunity reveals itself as the two of them snuggle on the sofa. Surreptitiously Sieun slips one of the straps off her shoulder before pulling her boyfriend's hand around her, making sure he notices the lack of a strap.

"Hm?" Sieun spies him looking at her out of the corner of her eye, and the hand over her bare shoulder twitches. And he slips his hand off her shoulder to... pull her strap up again! Doofus! Sieun tries again a little later, brushing her hair and accidentally slipping her strap off again. He feels her bare shoulder again, and this time he is slower, his hand gently gripping her shoulder before languidly pulling it up.

"Sieun?"

"Yes?"

"Do you umm, want to stay the night?" Sieun is partially satisfied—it's his way of asking her for sex, but she wishes he was more assertive, to tell her she should stay, that he wants her to stay. But no, it's always what Sieun wants to do that comes first. "That is, if you have no schedules tomorrow?"

"No, I can stay the night."

"Okay, great." Sieun stays seated, waiting for him to make a move. Yet over the next 15 minutes all that happens is Sieun catching him looking at her out of the side of her eyes. She'd have to be the one to move things forward.

"I'm bored, should we just go to bed?" He could not move any faster.

"Yes, same, let's go." Sieun is pleasantly surprised as he takes her by the hand and leads her to the bedroom. The post-coitus clarity settles in for Sieun as he gets up to dispose of the condom—he was more eager, more forward, so that's progress. But he was still very mindful of what she wanted, of how she would want things done, when really what Sieun wanted was to be done, and done hard. She would have to work on it more.

"Oppa, you've seen my performances right?" she asks him, snuggling against his chest.

"Yeah."

"What type of hairstyles do you like on me?"

"You look good in everything, so just whatever you have at the time."

"But you must have a favorite right? Orange hair, black hair, which do you prefer?"

"I guess black?"

"Okay, and hairstyle?"

"I dunno, you look good in everything," he reiterates.

"Would you want to see me in something different? Anything you would find sexy?"

"Maybe? I think you pull any look off, so it'll be fun to see something different." Sieun nods thoughtfully, already thinking about potential hairstyles. Her comeback was coming up, maybe she could really shock him out of his system.

"Okay, well, I have my comeback soon, so I won't be able to see you for a while."

"Really? I'll miss you! Make sure you're eating properly and don't get hurt okay?" He hugs her tightly. He's such a lovable sap! She just needs to make him a lovable sap some of the time, not all of the time.

"Hi oppa, did you miss me!"

"Si-Sieun?" You scarcely recognize the girlfriend you bid goodbye to weeks ago. "Why are you dressed like that?" In addition to her spaghetti top and an extremely short skirt, she is wearing her hair completely different—gone are the days of simple long hair with her bangs parted, Sieun has bangs, her hair is black, and her hair is done up in pigtails!

"We just finished the last touches on the MV and filming, so I thought I'd come visit you, give you a sneak peek of the concept!"

"Oh okay... It's cute? I think?"

"Wait really? That's not what we were going for though." Sieun seems slightly put off.

"Oh, what was it supposed to be?"

"It's supposed to be cheeky, a little naughty, you know?" Sieun bites her lower lip for emphasis, and you are stunned for a second. With her new look it feels like you are seeing a whole new side of Sieun. You squirm a little on the spot, trying to quell your desires quickly.

"Sure. Do you want something to drink?"

"Whatever you want, I just want to spend some time with you. We should watch a movie!"

"Aww, did my Sieun miss me?"

"What, did you not?" Sieun pouts, firmly pressing herself to you, and you have to back your hips away, lest she feels you growing.

"Of course! Okay let me go get something, you can go choose a movie."

Sieun settles in on the couch, her mind working quickly—his response was more muted than expected, but he was definitely hiding more from her. She saw his eyes widen when he took her in, felt him tense when she hugged him, and the way he backed his hips away from her when she pressed close—she just needed to do a little more! She flips through the movies and chooses one that she knows has a raunchier and more intense scene in the middle.

"Oh what's this one about?"

"I dunno, it sounded interesting, let's just watch it." They're sitting close together, but not nearly close enough for Sieun's liking. She pushes herself right next to him, almost sitting in his lap, and she draws his arm around her waist, making sure it "drops" slightly as she wiggles her butt to get comfortable, right on the hem of her skirt. One arm slips between his arm, and Sieun presses her modest chest against his arm, all to cuddle him more, to tempt him further.

As the movie goes on and gets to the passionate "good" parts, Sieun pushes herself more on him, making sure he's aware that she's right there, ready to do what's on the screen. He looks at her, breathing deeply.

"Sieun, do you want to stay the night?" The normal Sieun would say yes—after a while without seeing him, she wants it just as bad as he does. That's exactly why Sieun knows what to say to get him to crack.

"No, I can't, I have something tomorrow." She tries to get up, and he pulls her back, making her fall against him. He catches her, and Sieun smiles at his surprise when his hand finds itself under her skirt, touching bare skin already.

"Y-You didn't wear underwear?" he asks hoarsely, throat suddenly very dry. Reflexively he squeezes her cheek, feeling the juiciness of Sieun's ass. Just a little more...

"Even better, I did." Sieun cheekily replies, quickly getting up and pressing her skirt down, leaving him open-mouthed and dumbfounded while he tries to comprehend her words. "I'm heading out," she says airily, her hand briefly lifting her skirt as a tease.

"Fuck..." you mutter under your breath. You caught the briefest of glimpses as her hand flicked her skirt up—Sieun's wearing underwear indeed, except it's a small black thong, her pale cheeks tantalizing in the dim light. You had to feel her again! The sight of your sweet and lovable Sieun looking like the perfect representation of a fuckdoll is rewiring your brain in real time. You hug her from behind tightly, and as you cross your arms around her midriff you feel something... hard?

"W-What's this?" he asks her, breath hot and heavy in her ear. The way he grabs her has Sieun in a tizzy, and she has to take a deep breath to swallow a moan—she can feel his desire very tangibly against her back. "Sieun, what's this?" he repeats.

"A piercing, I decided to get one for the comeback, do you like it?" Sieun forces herself away from him, twirling around and slightly pulling her top up to reveal the little silver stud on her bellybutton. She watches his eyes trail from her face and down her body, settling on her flat midriff. The gaze then drops a little lower, and then it goes back to Sieun's face. Something is different.

"Ah!" He grabs her by the wrist this time, and he's not leading her to the bedroom, he's taking her there. Sieun lands on the bed, and he's on top of her immediately. His hands are on her shoulders, his weight pressing her down, but then... nothing?

"Fuck Sieun, I'm sorry." Your hands tremble as you force yourself to keep them only on her shoulders, resisting the urge to tear her outfit apart. Your words are labored, as if you've almost forgotten how to talk. "I need you." Your hips press down on her almost involuntarily, as if indicating what exactly you needed to do.

Sieun whines when you do so, and you could feel why too—she's fucking soaked. You breathe even more deeply into her neck. "Please stay the night."

Sieun almost forgets about the plan when she hears him speak. He took her to the bedroom, topped her like a hungry beast and then told her he needed her. He's so close to breaking, yet he restrains himself, begging her to say yes, to allow him to have her. Seeing and feeling wanted is sending a surge of power straight between her legs, and she twitches, almost throwing everything away to wrap her legs around him. She settles for wrapping her arms around his head, running a hand teasingly through his hair.

"No." His breath hitches, puffing against her skin. Sieun licks her lips, kisses his neck, and says the magic words.

"Make me stay."

In an instant he pulls her top down, palming and grabbing at her chest hungrily. Sieun feels his hand dance across her thigh briefly before reeling and throwing her head back—he's shoved two fingers unceremoniously into her, and yet she's wet enough to take him with no trouble.

"Fuck!" he growls into her ear, immediately withdrawing his digits to remove his shorts. Brazenly he lifts her skirt, and Sieun is momentarily embarrassed at her own state—her top is rolled down, her skirt is flipped up, scrunched around her waist, and her small black thong pulled to the side is doing nothing to "protect" her from him right now. He looks nothing like his usual loving herself—he eyes her up and down, his gaze dark and hungry, watching her every expression as he twists and curls inside her, feeling just how wet she is for him. He removes his fingers, licking them ravenously: Sieun tasted ready, smelled ready. Sieun definitely looked ready too—nothing like her usual prim and loveable self either, no; she looks cheap, wanton, easy. In the process of trying to break her boyfriend down, Sieun's breaking down in the very same way, letting her desires take over.

An unholy mix of grunt and moan escape both of them as he pushes himself in, and Sieun finds her hips being slammed and bruised almost immediately—they don't even register that he's doing her raw, with no condom, they just know that it feels fucking amazing!

"Oh my god fuck me, fuck me, fuck me!" Sieun's limbs are wrapped around him tightly, so much so that he's bouncing them off the bed, wildly thrusting and threatening to fuck the clinging Sieun into pieces. A loud scream pierces his eardrums, and he watches her cum, expression slack, little bellybutton stud quivering in bliss. He flips her around and pulls her ass up, and with Sieun's cry muffled by the pillow he fucks her from behind, a hand squeezing her pale cheeks, contrasted beautifully against the thong that's still on—she hasn't even lost a piece of clothing yet!

Sieun's in absolute ecstasy, the pounding she's getting far beyond what she thought he was capable of. He's getting so deep into her that she can't think straight, the sound of his body smashing into hers making her head ring. He has a hand on her tummy, finger playing with her piercing as he grabs her and goes even harder. She has to bite the pillow, suppressing the base sounds being ripped from her throat.

"Mmmf... Gah!" He uses both hands to pull on her pigtails, a jolt of pain shooting straight through her that becomes pure pleasure on the next thrust.

"So fucking naughty," he snarls, "I want to hear you cum." Me, naughty? She thinks to herself. Maybe she should be naughty more often, especially if this is the result.

"Y-Your naughty girl is going to cum, keep fucking your cheeky naughty girl!" He pulls harder on her hair, and they seem to yank Sieun's eyes to the back of her head, making her clench erratically around him once more. This time he cums with her, instantly firing a thick load deep into her womb. Sieun can barely manage a whimper as her orgasm overwhelms her, her senses firing all at once as she feels every hot shot of cum go straight to her head. She feels him still half-hard, still trying to fuck her, to push his cum deeper into her, until finally he gives up, collapsing the two of them into a pile of limbs.

"S-Sieun, fuck, I'm so sorry, I'm so sorry..." you rasp in her ear a little later. "What did we do? We've never done it without a condom! What did I do, oh my god!"

"You did amazing," she says hoarsely, her voice gone from her screaming earlier. "That was exactly what I wanted."

"W-What? I came in you, that's what you wanted?"

"Well, I didn't plan on that, but I can handle it." Sieun blushes, but continues on, a finger dipping and scooping the load oozing out of her. "I wanted you to do what you want to do, and not to think about me."

"What? Why? I could've hurt you, wait did I hurt you—" she shushes you with a finger.

"No, it felt so good. Because," Sieun brings your hand between her legs, making you feel your handiwork—creamy and wet. "Because it makes me feel good when you feel good, it turns me on seeing you eye me like a piece of meat. I don't just want to always feel loved, I want to feel needed."

"I always need you," you murmur, and Sieun squirms lower, trying to have your fingers in her. You oblige, pushing your cum back back into her and showing her how needed she is.

"K-Keep saying it!" she gasps, her eyes glassy with desire.

"I need you all the time, and if you're going to tease me like that I don't know what I'll do to you." You line Sieun's walls with cum, smearing your thick white paint all over her with curling fingers.

"Do whatever you want, it feels so good when you do it—" Her eyes flutter shut and she throws her head back, a choked moan leaving her throat as she quickly cums again. She breaks into a smile when she comes down. "I guess I'll have to stay the night, I can barely feel my legs." You help her to the bathroom, and the two of you clean up before cuddling in bed, exhausted from the short but intense session.

Sieun wakes up the next morning, a sore but satisfying buzz running through her body. A moment later she realizes what the satisfying buzz is—his mouth on her pussy, humming away like a happy eater.

"Oppa?" He doesn't hear her, her thighs squeezed involuntarily around his head deafening him. But he realizes she's awake, and with two hands on her cheeks he lifts her hips, giving him a better angle to eat her out from. "Wait, mmm! Ah!" Sieun has no say in the matter, her back arching, a morning stretch of the best kind. To Sieun's delightful dismay she realizes something—him knowing how to pleasure her and being able to do it when she asks for it is well and fine, but him knowing how to pleasure her and able to do it when he wanted to is a thoroughly lethal combination. The type of combination that could keep Sieun bedridden, pleasure-stricken and stuck in the throes of ecstasy like she is right now, his fingers rubbing her g-spot and his tongue doing god-knows-what to her clit. "Fuck, I can't, mmm!"

Sieun goes rigid, trembling in your hands. Her thighs tighten their hold on your head, and you tighten your squeeze on her cheeks, squeezing and delighting in the juice her pink well produces. You let her land back on the bed and get back to eye level with her.

"I needed to taste you." Sieun blushes, cheeks glowing from her orgasm. "I need to do more with you, stay here." Sieun remains on the bed, obedient but also thrilled at what you have planned. She's surprised, if not a little disappointed, when you come back with only a cup of ice water in hand.

"Want some?"

"Sure." Sieun takes a gulp, letting out a refreshing sigh. "What did you want to do more with me?" She had to know.

"Turn around, I want to give you a massage."

"Eh? What?" You do not brook any questioning, removing her nightdress and flipping her on her back. Your hands are on her shoulders, firmly pushing her down on the bed. "I don't need—"

"But I do." Your tone is firm, letting Sieun know that you would not have it any other way—from the way you're pushing down on her, she wouldn't be able to do anything anyways... and it's fucking hot. So Sieun let's you do it, your hands working on her nicely.

"I never knew you could do massages." Sieun manages between sighs, feeling your hands work on her shoulder blades and down her back. She really didn't mind it at all after the stress preparing for a comeback.

"You never asked me to."

"I'll be asking for it from now on then."

"I'll be giving it to you before you ask." The double-entendre is not lost on Sieun, and she wiggles her hips. You removes your hands from her, and Sieun's almost anticipating you to take her right there, but you don't. "I love you," you whisper into the air.

Before Sieun could respond she yelps, feeling something very cold right in the middle of her back! "Oppa!"

"Let me do this." You hold the ice cube on the middle of her back, rotating it in circles on her pale skin—not enough to be painful, but just enough for goosebumps to rise as Sieun wiggles to try and get away from it. You bring it up to the back of her neck, and Sieun gasps, reacting to the icy chill with a jerk of her head. You continue rubbing the ice cube over her back, bringing it down to her lower back and letting it run across her toned cheeks, before teasing the inside of her thighs. By now the cube has mostly melted from her body heat, and you're just fondling her with your cold hand, covering her in a sheen of moisture.

"Turn around." Sieun flips over obediently, her mouth slightly open, reeling from the new sensations. She never thought you would be interested in something like this, but how could she have known? Like with massages, she had never asked!

"It's a little too cold."

"I'll warm you up." You take a fresh cube, placing it at her neck and making her twitch once more. You salve it with a warm breath and a kiss, and Sieun moans.

"Ohhh... That's nice, that's really nice." You make note of it and move lower, eyeing Sieun as you bring the ice cube down to her tits. She bites her lower lip in anticipation, but even that's not enough to prepare her for the cold touching her nipples, her whimper soft and delicate. You bring your lips to them, breathing warm air on her ends, turning their cold-induced stiffness into arousal-tipped points. Then you move down to her stud, and touch the ice cube to it.

"Hnngh!" Her flat tummy shivers cutely, and you place your mouth over her little button, kissing it warmly and using your tongue to nudge it around. It drives Sieun up the wall—she's so sensitive from the cold, and the unexpected playing around with her piercing amplifies everything, and she's not sure how much more teasing she can take!

"Why did you get the piercing?" you ask her, moving the ice cube to her thighs and between her legs, threatening. Sieun spreads her legs, more to get away from the cold than anything, but still very enticing.

"I thought you might find it hot, that maybe you'll think of me as something more than lovable."

"Is that why you changed the way you dress, your hairstyle, your thong?" The last word is like a whip to Sieun as you bring the last remaining piece of ice near her pussy, and it melts in your hands, joining the puddle of slick leaking from her wet heat.

"Ohh yes, yes yes yes!" Sieun babbles a response as you replace the cold with your warm breath, eating her out again. You plunge your fingers into her and Sieun reels from the penetration, using her hand to stifle a loud moan. The enhanced sensitivity from the cold is wrecking her self-control, your warm fingers curling deep in her causing her to heat up to her boiling point. "D-Don't stop— No wait, don't, stop!" Your tongue flicks on her clit incessantly, and Sieun finds your head, pushing it hard against her pussy as she cums.

"Ah no, cum— hnnnnngh!" Sieun groans as satisfying relief washes through her, her body instantly hot with pleasure. She squirts all over your face, limbs rigid and jerking as her muscles seize up. After she's done cumming her brains out Sieun lays there, her skin shining with the melted ice, her thighs a combination of slick and water as you finally remove yourself from her.

"Haah!" She whimpers as something huge enters her too-tight tunnel instead. "Oppa!"

"I need you right now! Isn't this what you wanted?" you growl in her ear, and Sieun can only whine and nod. She sees your face covered in her juices and covers her own face in embarrassment, but you pull them away. "You wanted me to need you, need my sexy fuckdoll that I can do whatever I want with?" If last night was wild and feral with few words, today morning is intense and directed, giving Sieun maximum pleasure by hitting spots only you knew. You put one of her legs on your shoulder, keeping the other pinned with your hips—you're quite literally splitting her open.

"Oh fuck, that's deep!"

"You like me loving you, but you wanted me to lust after you? Doing things to you that you never thought to ask? So greedy." You suck on her earlobe, which you knew she liked.

"Nngh yes, it feels so good!"

"I'm not going to do it all the time, I don't want to break my cheeky fuckdoll." You grab her ass for emphasis.

"I won't break," Sieun challenges you, even as she has to bite her lip to stifle a moan. "Just bend— Mmm!" She can't hold it in as you push even deeper, widening the split.

"Doing all this, changing your whole image, when all you had to do was ask!" The fact that it was mainly for STAYC's comeback is lost on the two of you in the moment. "Such a bad influence on me Sieun."

"You're right, I've been so bad!" Sieun set out to break you down, to corrupt you, yet at this point who is corrupting who? "I wanted you to need me, to lose control!" The split is undone as Sieun places her other leg on your shoulder, letting you push both knees to her chest as Sieun is the one that starts losing control, her eyes rolling in her head once more as you dip deep into her.

"Well you did it last night, making me need to fuck you raw, making me need to cum in you." Sieun clenches around you at the thought of being creampied, but you wanted to hear her say it. "Looks like I'm doing you raw again already, should I do what I need to do?"

"Yes, do whatever you need to do, fill your fuckdoll up!" Sieun cries, on the edge herself. A few more punishing thrusts into her later you groan and explode, pumping her full of cum for the second time. Sieun pulls you in for a forceful kiss, nails digging into your hair and dragging across your neck as you moan into the liplock—Sieun's cumming too, milking you for all that you have.

"Oh god, it's so hot inside me..." Sieun wraps her legs around your hips, making sure you stay in her after. You watch her eyes flutter shut, lost in ecstasy, her tongue licks her lips, like she's savoring your thick load directly, thoroughly enjoying the rawness of everything. Then she opens her eyes, and she's back to being Sieun—the kiss you two share is back to being lovable and tender, feeling her smile against your lips and holding her close.

"You okay?"

"Yeah, I feel so good."

"I'm glad." You two stay like that for a little longer, before you finally slip out and roll off her. "We should go to the pharmacy, get you something," you mutter, quickly getting Sieun wipes to clean up.

"Don't worry, I'll handle it, but I have to go soon." She pecks you on the lips and jumps in the bathroom, coming out shortly after looking like the Sieun you're more familiar with. But as you watch her put her outfit together again you felt a twitch, and had to say something.

"You better not show up with that outfit again." It was a warning and a promise.

"Why not? What's going to happen?" You stay silent at her smirk, debating if you should just jump her again. "Guess I'll find out next time." She pulls her top up slightly to show off her belly piercing once more, before turning around with a deliberate flourish.

"Cheeky. I need you against the door, now."

A/N: I've been down bad for Sieun in their latest comeback, she looks so good it's crazy. I had the idea of wanting to write one where the OC is seduced/corrupted, and Sieun's transformation was perfect for it. But as always it "fails" and she's falling along with him heh. Had the idea during their comeback but it's over already lol, rip took too long. Anyways thanks for reading!

#smut #stayc #sieun

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