kat_lair: (GEN - a ruiner of things)
[personal profile] kat_lair
***

Title: The One That Flips the Stereotype
Author:[personal profile] kat_lair
Fandom: Stray Kids
Pairing: Kim Seungmin/Yang Jeongin | I.N 
Tags: Kinktober 2026, Alternate Universe - Not K-Pop Idols, Friends with Benefits to Lovers, Dom Bottom Kim Seungmin (Stray Kids), Sub Top Yang Jeongin | I.N, thrilled actually that those are existing tags, Dom/sub Undertones, Feelings Realization, Porn with Feelings, First Time
Rating: E
Word count: 3.390

Summary: 

“You know I’m doing you a favour here,” Seungmin says, raising an eyebrow. It’s a statement, not a question. There’s an edge of a sneer in his voice, which Jeongin knows is there for his benefit because, like always, it makes him squirm. It’s doubly effective coming from Seungmin who is naked, leaning back on his elbows in Jeongin’s bed, and regarding Jeongin like he’s something cute but a little pitiful. 

Jeongin wants to bite him. He wants to snark back or be mean the way Seungmin sometimes likes it but right now, kneeling between Seungmin’s spread legs he can only nod frantically.

“Yes,” he says. “Yes, thank you, hyung. Thank you, thank you, I’ll be so good.”

Seungmin barks a laugh. “It’s your first time fucking someone,” he says, blunt. “You’ll be terrible probably.”


Author notes: Fic 23 of my SKZ Kinktober 2026! You can find FAQs (like 'what's with these stupid titles?') in the series description page. None of these fics are betaed because I could not ask that of anyone. So, if you do spot a typo or another mistake, feel free to point it out to me in the comments. Kink prompt for today's fic = sub top/dom bottom.

The One That Flips the Stereotype on AO3


“You know I’m doing you a favour here,” Seungmin says, raising an eyebrow. It’s a statement, not a question. There’s an edge of a sneer in his voice, which Jeongin knows is there for his benefit because, like always, it makes him squirm. It’s doubly effective coming from Seungmin who is naked, leaning back on his elbows in Jeongin’s bed, and regarding Jeongin like he’s something cute but a little pitiful. 

Jeongin wants to bite him. He wants to snark back or be mean the way Seungmin sometimes likes it but right now, kneeling between Seungmin’s spread legs he can only nod frantically.

“Yes,” he says. “Yes, thank you, hyung. Thank you, thank you, I’ll be so good.”

Seungmin barks a laugh. “It’s your first time fucking someone,” he says, blunt. “You’ll be terrible probably.” Then he reaches over with his foot and nudges Jeongin’s hard dick, making it bounce against his stomach. 

It feels weird, but not bad weird, maybe even good weird. Jeongin whines, fingers curling into the covers because if he touches his cock now he’s not going to last long enough to…

“No, no, I’ll try, I promise, please…” He doesn’t have to beg. Seungmin wants this. Seungmin would never do this just as a favour, no matter what he’s saying, so the fact that he’s here, naked and flushed and bossy is proof enough that Jeongin is absolutely going to get what he wants. They both are. 

“You’ll listen to hyung, yeah?” Seungmin asks, smug and breathless with it. “Follow instruction for once in your life because you know you’re going to get your dick wet if you do?”

Jeongin can only nod. Normally, he would absolutely protest and ignore whatever Seungmin says, just to make a point but ever since they started doing this… He finds it easier to follow along because Seungmin has the best ideas, really. After all, it had been Seungmin who had proposed this in the first place. 

Sex, Jeongin corrects in his head, because he’s a grownup and he can call it what it is. Seungmin had suggested that they have sex. Together. Sex together. It’s also the first real sex Jeongin has had with anyone which Seungmin definitely knows even if Jeongin hasn’t said anything. Whether it is that for Seungmin, Jeongin hasn’t asked, partly because it doesn’t matter and partly because he doesn’t really want to know the answer. 

“Finger me open then,” Seungmin tells him now, and it’s both shocking and shockingly hot to hear something like that come out of Seungmin’s mouth. “You remember how to do that, right?”

Right. Yes. They’ve done this before a couple of times, both ways, and the memory is more distracting than helpful. Seungmin however doesn’t care and simply tosses the bottle of lube at Jeongin, who yelps in alarm, barely avoiding being hit in sensitive areas by a fumbling catch. 

Seungmin laughs. “Does hyung need to talk baby through this?”

Jeongin flushes. He’d like to say it’s from annoyance or indignation but that wouldn’t be completely true. 

“No,” he mutters, sounding sulky but unable to help it. “I know what to do.”

“You’re learning,” Seungmin concedes. “Hyung’s teaching you.” There’s something dark in his voice at that, something not altogether happy but it’s gone too quickly for Jeongin to catch onto it. 

Besides, he gets more than a little distracted by the way Seungmin catches hold of his right knee, folding his leg toward his chest. The bottle of lube almost slips through Jeongin’s suddenly numb fingers. He can’t tear his eyes away from the sight in front of him, blindly thumbing off the cork and pumping some of the lube onto his cupped hand. Diligently, he warms the lube by rubbing it between his fingers first, knowing that Seungmin will yelp and complain if he doesn’t. 

Jeongin is proud of the fact that his hand doesn’t shake as he brings it to between Seunginmin’s legs. A careful tap of his finger against Seungmin’s hole results in a soft huff of breath, the muscles of his legs briefly tensing. 

“Two,” Seungmin says. 

Jeongin’s gaze snaps up to Seugnmin’s face, confused. 

“You can start with two fingers,” Seungmin clarifies. “I’m stretched enough.”

Jeongin frowns. They haven’t… They haven’t done anything for a few weeks. Jeongin’s been away to see his family and then Seungmin had a big project for university and…

But just because Seungmin hasn’t done anything with Jeongin, doesn’t mean he’s not done something with someone else. Someone not Jeongin. 

The thought is like a cold wave through him, dampening arousal and anticipation more effectively than a bucketful of ice water. Jeongin bites the inside of his lip, hard, angry at the way the idea makes him feel, because it shouldn’t. They aren’t… They’re just having sex. 

Something of what he’s thinking must bleed through to his expression because Seungmin’s softens. 

“Toys,” he says, by way of explanation. “I have… I like using toys, sometimes.” He’s watching Jeongin carefully, like he’s looking for something, and then adds, “When you’re not here.”

The implications burn through Jeongin like a wildfire, sudden and devastating, but cleansing at the same time, leaving space for something new to grow. 

“Oh,” he says, stupid with the relief, but smiling. 

Seungmin rolls his eyes but there’s a smile lurking in the corner of his mouth too. “Yeah,” he says. “Oh.” Then he nudges Jeongin’s side with his foot. “So, get on with it already.”

This time Jeongin doesn’t hesitate, pressing in with two fingers as instructed. The clutch of Seungmin’s body around them is familiar by now, the heat and tightness of it overwhelming in the best of ways. But Seungmin had been right, there’s not as much resistance as usual and the idea of Seungmin working a toy inside him, all alone in his bedroom while Jeongin is away because he… Because he…

“Will you show me, hyung?” Jeongin asks, voice breaking. “Please, will you…? I want to see.”

It’s not exactly a complete sentence, but, like always, Seungmin understands what he means anyway, delight and desire warring on his face. 

“Yeah? You want to see hyung fuck himself with a toy?” It’s a rhetorical question but Jeongin nods anyway, fingers pushing in an out of Seungmin’s hole, sloppy and eager, but Seungmin’s not exactly protesting. “You think you could just sit there and keep your hands to yourself?” he asks, voice catching on a moan as Jeongin crooks his fingers just right, the way Seungmin had showed him. 

“I could try,” Jeongin says. It’s all he can promise. The mental image alone is almost too much, though the reality right now is better; Seungmin pushing back into his touch rather than telling him to just watch. 

“Okay, okay, fuck…” All of a sudden Seungmin’s hand grips Jeongin’s wrist. “Enough. I’m ready.”

“But…” It’s still only two fingers inside Seungmin and Jeongin isn’t like, unusually large or anything but he is definitely bigger than two fingers. He withdraws anyway, because Seungmin told him to.

“Hyung wants to feel you,” Seungmin says, all casual as if he isn’t fracturing Jeongin’s mind into a thousand glittering shards of unbridled lust. 

Jeongin makes a noise, curling in on himself, hand flying to squeeze the base of his dick in a desperate attempt to not come on the spot. 

Seungmin laughs. Not mean, not really, but something about it makes the bottom of Jeongin’s stomach clench anyway, helpless and wanting. “I think we better put a condom on this,” Seungmin says, sitting up to touch the tip of Jeongin’s cock, a quick swipe that leaves Jeongin shuddering. “Otherwise, you’re not going to last.”

Seungmin’s fingers come out shiny and for a moment Jeongin thinks he’s going to lick them, or maybe feed them to Jeongin instead and…

With a hum Seungmin wipes his fingers on the bed sheets. Probably for the best. “Hold steady now baby,” he says, deftly opening the condom wrapper that had been waiting on the bed for them. 

Jeongin grits his teeth as Seungmin rolls the condom on him. His touch doesn’t linger, but his eyes do. Slowly, they travel up from Jeongin’s cock, still in the tight circle of his thumb and forefinger, following the line of his arm and chest, all the way to Jeongin’s face. 

“Good,” Seungmin says, quiet, and for a moment Jeongin doesn’t know what he means but then Seungmin’s hand comes up and cups his face. “You’re so… Iyen-ah.”

“Hyung?” He doesn’t know what he’s asking but Seungmin answers it anyway, the slightest pressure of his fingers at the back of Jeongin’s neck, the tilt of his head, the soft sigh of Jeongin’s name that leaves Seungmin’s mouth open. 

Inviting. 

The kiss is hungry. Seungmin lets Jeongin take control for a moment, mouth going pliant and soft under his, as Jeongin all but tongue-fucks him back to the mattress. Normally, it’s easy to forget that he’s actually bigger than Seungmin, wider at the shoulders and chest, thicker at the arms and thighs, partly due to genetics, partly due to the new gym routine his older hyungs have inducted him into. But now, with Seungmin arching underneath him, all lithe and pretty without once seeming fragile, the difference seems exaggerated. 

It’s also driving Jeongin just a bit crazy. Seungmin sucks on his tongue, lewd and greedy, and Jeongin thinks maybe next time he could fuck his hyung against the wall, at least for a bit, hold him up and drive into him, wonders if Seungmin would let him try. Maybe if he does a good enough job now, he’ll feel confident enough to at least ask. 

They’re pressed together tightly, Seungmin’s cock trapped between their bodies, Jeongin’s bumping clumsily against his taint, close but not where it needs to go. Seungmin finally shoves at his shoulder, gets their mouth apart to demand, 

“In me. Before you spill inside the rubber and I’m going to have to get one of my toys out to satisfy myself instead.” 

A dig, no matter how playful, at his prowess should upset him, Jeongin knows that intellectually, and normally he might bite back. But right now, the implicit challenge only strokes the flames higher, makes him want to do better, do whatever Seungmin wants. With effort, Jeongin sits back up onto his heels, skimming a palm along the underside of Seungmin’s slim thigh. His legs, already spread open, somehow fall even wider apart. He folds one toward his chest again and Jeongin’s fingers are back at his hole, pressing in, testing the give, sinking in with ease. 

Seungmin slaps his hand away. “Your dick,” he says slowly and with emphasis as if Jeongin is just a bit dumb. Which... “Thought you wanted to get rid of your virginity?” How Seungmin manages to sound so smug, all lilting tones and smirking lips, whilst also very obviously being as turned on as Jeongin, is beyond him. 

“Yes, hyung.” Jeongin nods, pulls his fingers out. Truth be told, they’ve both sat through enough ‘virginity is a social construct’ lectures from Chan for that to matter all that much, but Jeongin does like the idea of this, like almost all of his other firsts, happening with Seungmin. “Want to fuck you.” 

Something about that, crude as it is, makes Seungmin’s breath hitch. Pointedly, he shoves a spare pillow under his hips. Jeongin can take a hint. 

A few minute adjustments to the angle and then Jeongin is sinking in agonisingly slowly and yet almost too fast for him to process all the sensations. Seungmin is so tight, somehow feeling much hotter than body temperature should, his body yielding to Jeongin in increments but yielding, nonetheless. Jeongin is so focused on watching his dick disappear inside Seungmin that it’s not until his fingernails dig into Jeongin’s back hard enough to hurt that he looks up. 

As clichéd as that is, the sight, quite literally, takes his breath away. Seungmin’s head is thrown back, the long line of his throat as taut as the rest of his body, arching off the bed in a way that makes Jeongin wish for his camera. He’s groaning, except the sound is purer than that, clear and beautiful, falling from Seungmin’s open mouth in a primal melody of satisfaction. Seungmin is feeling good. Because of Jeongin. The realisation punches the exhale out of him, his hips jerking forward on instinct, burying himself in rest of the way. 

Seungmin cries out, freezing for a blink of an eye. Then his legs come up and around Jeongin’s waist, knees digging into his ribcage like a vice, and before Jeongin knows what’s happening he’s been rolled onto his back. The pillow goes flying off the bed, Jeongin’s dick twists a little painfully for a second or two before Seungmin is properly seated on top of him at the right angle again, fully bottoming out. 

This time they both groan, Jeongin’s head still spinning from the change of position, his arms flinging out to grapple for a purchase on the messy sheets. Seungmin is bracing himself against Jeongin’s chest, the heels of his palms resting on his sternum. The pressure is uncomfortable but somehow reassuring all the same, a reminder that this is real, that they’re really…

Seungmin moves. It’s not graceful, or even meant to look good, just a jerky up-and-down hitch of his hips, but Jeongin cares about none of that because it feels good, better than anything, not just physically either. Jeongin looks up Seungmin’s flushed face, the blotchy red that’s spreading down his sternum, his dishevelled hair, the way his soft middle rolls up when he bends down, stretches out when he leans back, building a rhythm of sorts, and thinks oh fuck, oh fuck, oh fuck, I’m in…

“Iyen-ah,” Seungmin gasps. His fingers are clumsy on Jeongin’s face and it’s not until they’re turning his face around that Jeongin realises he’s been hiding it in the pillow. “Look at me.”

It’s not a request Jeongin can ignore. In fact, it’s not really a request at all, Seungmin’s words brooking no argument despite the way his voice wavers at each roll of their hips. 

“Hyung,” Jeongin’s own voice is no better, thin and pleading. “Please, please, Min, hyung, I need…” 

Seungmin grasps his hands in his, lacing their fingers and bringing them down on either side of Jeongin’s head. He can feel the way his eyes go wide, mouth opening helplessly, back arching off the bed because yes, this is what he needed, Seungmin holding him in place because he wants him to stay.

“Baby,” Seungmin breathes against his lips, “give hyung what I want, yeah?” 

There’s no question what that is, Seungmin’s hips raising up, grinding down, up again, and down and Jeongin would try to help, to fuck Seungmin like he promised he would, but he doesn’t get a chance, because Seungmin takes over entirely, riding him slow and relentless. It seems to go on forever but in truth Jeongin simply loses track of time, everything narrowing down to the drag of tight flesh around his cock, the uncoordinated brush of Seungmin’s mouth against his, the sweat gathering between their palms, sliding together slightly at every push. 

Jeongin holds on as long as he can, not wanting it to be over because what if this first time is the only time and he’ll never get to have this again? He thinks maybe Seungmin is holding back too, reining himself in every time he starts to speed up, forcing himself to slow down. 

It can only last so long. Eventually, they both start losing rhythm, Seungmin grinding down, meeting every uncontrolled stutter of Jeongin’s hips like he can’t get enough. His lips are salty, when he presses them against Jeongin’s in something that is too uncoordinated to count as a kiss, too brief for what Jeongin really wants, especially when he’s starting to suspect that’s something more complicated than he ever anticipated. 

Whatever realisation is trying to fight its way through the haze of lust, gets swept away when Seungmin straightens back up and tugs one of Jeongin’s hands with him, wrapping it around his cock. 

“Make hyung come first.” It’s somewhere between a demand and a plea, the vowels slurred in a way Seungmin with his perfect diction would never allow normally. His eyes are glazed, and when Jeongin strokes him from root to tip, he cries out, the kind of note that gets you a record deal or prison, depending on the context. 

Jeongin wants to swallow it whole, stitch it to his fucking heart like a badge of honour, because he made it happen. He’s the reason Seungmin’s eyes are rolling back, his body going tight, tight around Jeongin’s dick, as he fucks back onto it and then forwards into Jeongin’s fist, once, twice, coming all over it on the third sharp roll of his hips. It’s because of Jeongin that Seungmin slumps forward, heavy and pliant, his hole still squeezing him erratically. 

“Hyung, I… Please, oh god, please…” Jeongin gathers him close, close, arms coming up to wrap around Seungmin’s waist, his hips pistoning up, uncontrolled. He’s afraid he can’t stop if Seungmin tells him to. 

Luckily, Seungmin says no such thing, only humming into Jeongin’s ear, low and content. 

“Feels good,” he murmurs. “Made me feel so good. C’mon baby, take—” He hiccups slightly, from the aftershocks or simply from the way Jeongin is filling him still, chasing his pleasure now that— “Yeah,” Seungmin says. His mouth is wet and hot against the side of Jeongin’s neck and— “Come for hyung. I want… Give it to me. Iyen-ah. Sweetheart.” 

Jeongin feels like he goes blind with it. Nothing but black spots dancing in his vision, nothing but this boy in his arms that he, that he… The pleasure spirals outwards from his dick, emptying itself inside Seungmin and Jeongin can feel the way he arches off the bed, strong enough to lift Seungmin too. They stay like that for somewhere between two seconds and an eternity, suspended between pure physical pleasure and something more layered, until the wave of it finally ebbs and Jeongin crashes back to the bed fully, Seungmin a heavy, boneless weight on top of him. 

It catches him suddenly, a feeling of something overwhelming and desperate. It’s not bad, just… big, and urgent, and Jeongin rolls them over, overcome with the need to keep Seungmin from leaving even though the hasn’t made a single move to do so. 

“Ooof!” Seungmin huffs in surprise, groaning a little as Jeongin slips out, sooner than he intended to. “Careful,” he admonishes, though there’s no heat in it. “You may be ready for a round two already but I’m going to need a nap and maybe a snack, not necessarily in that order.” 

“No,” Jeongin shakes his head, or, more accurately, rolls his forehead against Seungmin’s shoulder, “that’s not… I mean, yes.” He takes a deep breath, starts to lift himself up. “I’ll get you a snack, hyung, and then we can—” 

“Iyen-ah.” Seungmin’s hand comes up to grab his shoulder. “What is it?” There’s concern in his expression, subtle but there when you know how to look for it. And Jeongin does. 

He doesn’t know how to put what he wants to say into words though. What comes out is a weak approximation. “I just… Was it, was it good? What you wanted?”

Seungmin’s eyes widen and then narrow. “Yes,” he says slowly, “it was good.” His hand travels up to the side of Jeongin’s face, fingers brushing sweaty strands of hair off his eyes. Jeongin’s arms tremble from the effort of holding himself still. 

“You were good,” Seungmin continues, because of course he heard the real question anyway, plucked it straight out of Jeongin’s heart. “You’re what I…” He breaks off then, urges Jeongin back down, their mouths meeting in a shallow kiss, tremulous and tender in a way neither of them are brave enough to be normally. 

“You know that, right?” Seungmin asks when they pull apart again, some aeons later. He’s smiling, a little wistful, a little self-deprecating even, but a lot hopeful. “That I want you, this. If you…?” 

Jeongin is not good with words. But he’s never needed them to show Seungmin what, who he wants, and he won’t now. 

 
***

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