Chapter Text
When Hoseok walks into the classroom after classes have already ended, Kihyun's there.
It's obvious, really, because Kihyun has been doing it for the past several weeks and he would not leave until he felt like he had made any progress, only to get home and stare at his calculations some more, get barely any sleep and only eat what Hoseok would shove his way.
He’s been that way ever since they were kids. Stubborn, always needing to have his way, controlling.
What people didn't see in his geeky best friend was that he was also caring, brave and loyal. That was his whole reasoning, ever since they were kids, through school and now university.
Kihyun needed an answer and he would not rest until he had one.
Hoseok walks down the stairs to the classroom and sits down next to Kihyun, watching the way he fiddles with his bottom lip as his brain works a million times per second, and he barely acknowledges Hoseok's presence by his side.
After some time, during highschool, Hoseok had noticed how much shit he and Kihyun would get for being smart and liking nerdy things. They would get picked on and made fun of and Kihyun would get pissed and tell them off, especially standing up to them because Hoseok couldn't. He had always been softer.
And then he found out he liked sports and was good at them, and that some people found him good looking, and that he could dress differently to fit in better. He was so desperate to fit in that he did all that while Kihyun had to watch his best friend pretend to be someone he wasn't.
He had to dumb himself down and pretend to be shallow like the others and mean like the others. He could pretend all he wanted, but he could never do it when it came to Kihyun.
After some time Hoseok realized Kihyun's opinion of him was the only one that mattered. Kihyun's gaze on him and the way he smiled at him had changed, and he wondered how anything he did to fit in was worth it if he didn't have Kihyun looking at him like they were each other's halves anymore.
So he fought to get accepted into the same college as Kihyun.
That brings him to the physics department, looking for his dumbass best friend and roommate who insists on trying to solve the matter of time travel, like any of it actually makes sense.
He couldn't deny that he felt it too, or that he noticed the patterns his five other friends noticed too. In their own way they were trying to find the common factor HW that brought them all together; that felt so familiar but in a way felt like a dream they once had.
But how could all of them have had the same dream?
The thought of Kihyun being in a car crash had been enough for him to help him find out what the fuck was actually going on.
“There’s something I’m not seeing,” Kihyun sighs, annoyed, then gets up to walk up to the white board and scribble down calculations like they were happening in real time in his mind. “It makes no sense, something's missing.”
“You need to rest, you have rarely slept and you're not thinking clearly,” Hoseok tells him, walking up to him and staring at the board. “Your handwriting is barely discernible, Kihyunie.”
“Hyung, I can't stop and rest anymore. There's something wrong. Something in these formulas tells me we're on the brink of something happening, and if we don't find out what's going on soon we might lose sight of HW,” Kihyun insists, annoyed. “If you're not gonna help me, go back to our room and do your homework or something.”
“I never said I wouldn't help you,” interjects Hoseok. “I'll never leave you to fix things alone, stupid,” he says it like it's obvious, and Kihyun knows it's true as well, even if he wouldn't like to feed into Hoseok's feelings like that. “Wait, there's something off,” he mumbles.
“I've been saying.” Kihyun sighs. “Have you not been listening?”
Hoseok shakes his head. “No, look, you wrote it on the power of 6, but I think it should be 7.” Hoseok points it out.
“Why?” Kihyun asks, confused. “Why seven?”
Hoseok looks at him, something suddenly clear in his mind. “Because seven is always the right number,” he says.
Hoseok redoes the whole equation, and ends up with X=4155102M.
“That's…” Kihyun whispers to himself. “Write it backwards.”
“What? That's not how it works.”
“Just do it,” Kihyun insists firmly.
M2015514 = X
They stare at it, and then at each other for a full moment.
“That's it,” Hoseok mumbles.
Kihyun looks like he just found the answer to a question he never wanted answered.
“Call Changkyun and tell him we meet up tonight,” he says, moving to walk away. Hoseok holds him by the wrist and asks him to wait, tells him they need to think before they act, but Kihyun is having none of it, and brushes him off.
Hoseok does as he asks, but quickly follows after Kihyun as they go to their dorm and go around the room gathering whatever they might need.
“Minhyuk texted saying they’ll be there tonight, but Hyunwoo's got a headache and he's taking him to their dorm to rest before that,” Kihyun tells Hoseok, his glasses running down slightly the bridge of his nose and almost hypnotizing Hoseok. “Did Changkyun say anything, Hyung?”
Hoseok nods. “He said he and Jooheon are looking into the security systems and they'll send us anything they find.” Hoseok watches Kihyun’s expression after he says it.
“You're staring,” Kihyun says, looking over at Hoseok with his arrogant little stare and smirk on his lips. “Take a photo.”
“I've already got so many,” Hoseok mutters back.
They're sitting at the foot of each of their beds, staring at each other.
“I wonder what we might find today,” Kihyun says.
“Me too,” Hoseok confesses. “You need to promise me something though.”
“What's that?”
“Don't make rash decisions without consulting the rest of us first,” Hoseok practically begs. “We don't need you becoming a mystery as well.”
With the way Hoseok looks at him, he always knows what he's thinking.
“You've always found a way to say what you felt without ever needing to say a word,” Kihyun chuckles. “C’mere,” he beckons.
Hoseok gets up from his bed and goes towards Kihyun, his leather jacket on his bed now, and all he has is his black turtleneck jumper. He gently moves Kihyun’s glasses up his face, and stands in front of him.
“I’m not going anywhere,” Kihyun promises. “We’ll find the answer together, all of us.”
Hoseok hums, accepting the way Kihyun's fingers interlace with him and gently pull him in. He allows Kihyun to press him down on his back onto the bed, and lets him move over him and press his lips to his.
Kihyun's lips have always been soft and skilled. He always found a way to melt Hoseok like putty in his hands and mold him into the most beautiful things he could think of.
Kihyun’s hands move down to his body and touch him so gently, and Hoseok knows it's not gonna last long — the softness — but he loves what comes after just as well.
Hoseok’s hands move up to take Kihyun's glasses off once their lips part, and he puts them on the bedside table. He knows Kihyun can't see well with them, but he's instinctive, and relies mainly on what he can hear and feel, especially when it comes to Hoseok's body.
Kihyun's hand finds the hem of Hoseok’s sweater and slips under it, fingers gently tracing every ridge between his muscles. Kihyun's lips find his jaw and Hoseok’s own lips part with a gasp at the feeling of being engulfed in Kihyun. It doesn't matter how many times it's happened; it's always all-consuming.
Hoseok puts his hands in his hair and pulls him in to kiss him again, pressing a leg in between his legs and swallowing the moan that comes out of Kihyun.
Kihyun kisses him and undresses him so skillfully Hoseok barely notices he’s naked until Kihyun's pulling away with a heavy gaze while looking down at him like he's tracking a prey.
“Are you my bad boy, hyung?” Kihyun asks, seductive, almost hissing. “You're so beautiful,” he whispers, taking Hoseok's cock with his palm on the underside of his shaft and fingers near his sack, running his fingertips up the sensitive skin and taking it in his hand fully. “For me?”
Hoseok nods, lips parting in a silent moan as Kihyun strokes him slowly. His hands go down to brush a fingertip over his hole, with Hoseok biting his lips as he allows it.
“Take your clothes off?” he asks. “I want to feel your body on mine.”
Sometimes they do it so quick, rushed, that they can't even take their clothes off fully, and it's not like it's not good or that Hoseok doesn't love being taken in the least used restroom of all campus while everyone’s in class and Kihyun has to shove his tie in Hoseok's mouth so he’ll be quiet. He just wants to take all he can get when he can get it.
“Can you get the lube for us?” Kihyun asks gently as he obliges, shedding his layers of clothing one by one as Hoseok reaches for the nightstand without even leaving his spot on the bed. He lies back with the lube and condom in hand, stroking his cock as he watches Kihyun peek off his shirt and kneel in between his legs with only his jeans on. His hair is an ashy brown and permed in perfect waves, and it makes him look like an angel and Hoseok couldn't feel more guilty for wanting his cock so bad.
As if Kihyun wasn't the farthest thing from an angel whenever clothes were off.
He takes off his pants as well and gets back on the bed on top of Hoseok. “You can touch me,” he whispers, a chuckle leaving his lips when Hoseok's hands immediately go to his body and heel up his torso, then down to his ass and the back of his thighs, pulling him down roughly on top of his own body. “Fuck me?” he asks.
“Sure,” Kihyun bites down on his bottom lip with a smile. “Suck my cock first.”
Hoseok nods easily. He lets Kihyun get off him so he can kneel on the floor in front of him, while Kihyun sits on the bed with his legs spread, cock proudly standing and waiting for Hoseok's undivided attention.
Hoseok comes close and takes it in his hand, the other on the floor for balance as he kneels with his legs spread, the tip of his cock brushing Kihyun’s shin and throbbing in response to it.
His lips find the head of his cock so easily, tongue darting out to lap at the slit on top and suck on it wetly. Kihyun hisses, but Hoseok wants more than that.
He sucks the whole head in between his lips, bobbing up and down the flushed cock and humming at the warmth against his tongue. He loves Kihyun's cock, would do anything for it, and would suck him off forever if he’d let him.
“That's nice,” Kihyun whispers, fingers gently scraping Hoseok’s nape.
When he reaches for his glasses so he can watch better, Hoseok borderlines insanity.
He licks at the shaft, down to his balls, comes back up and sucks him in again, moaning like he's getting fucked and aching for Kihyun's hot cum spurting down his throat, but he knows if he wants to get fucked after this, he’ll have to deprive himself.
Kihyun seems to pay no mind to what they plan to do or not, because he indulges Hoseok so much with his slutty mouth on him, making him moan slow and breathy as he gets closer, and Hoseok can only suck him faster and wetter and needier, like he needs cock to exist.
The way Hoseok gets when they're doing this is enough for him to never want anyone else in his life.
Hoseok bobs his head with Kihyun’s balls in his hand, full and twitching slightly as he swallows around the head of his cock. He moans as he sucks and presses his leaking cock against Kihyun's shin and begs him to cum in his mouth.
Kihyun hates to disappoint.
He lets Hoseok know he's close, and barely moves his hips as Hoseok knows exactly what to do without him needing to show him. He presses his tongue against the underside of his cock and shoves it down his throat with the spasms getting Kihyun to cum with a low moan and his head falling back, the chain from his glasses falling against his neck as he didn't care to put it on properly before.
He's such a beautiful sight Hoseok feels lucky that he's all his.
“Your cock is so good,” Hoseok sighs when he pulls out, spit dripping down his chin and red used lips.
Kihyun thinks he's never looked more beautiful.
“Your turn, bad boy,” Kihyun says, pulling Hoseok up and asking him to press his face on the pillow and put his ass up.
Kihyun watches as his balls hang so pretty and full, his pink cock one of the hottest things he's ever seen. He pulls it back towards him and sucks on the head softly, leaving it wet and glistening to Hoseok's desmay.
He spreads Hoseok's cheeks and exposes his pink hole, twitching at being exposed and practically inviting Kihyun in. He runs the very tip of his tongue over the rim, circling it, and Hoseok groans against the pillow.
“Don't play with your food,” he complains in a playful tone. Kihyun chuckles before going right at it and pressing his tongue against his entrance, leaving it wet and twitching even more.
Kihyun uses his tongue to open Hoseok up, sucking on his hole and pressing his tongue flat against every bump like he’s made of sugar — and he might as well be.
Moaning and feeling his cock throbbing and probably dripping onto the bed, Hoseok buries his face into the pillow and rolls his hips back against Kihyun’s face.
“Such a good ass, just for me,” Kihyun hisses, spreading him with his thumbs and pressing his tongue in, fucking him slowly with it.
“Aren't you hard already?” Hoseok practically sobs, not standing being teased any longer.
Kihyun smiles. He is, actually, but playing with Hoseok is so much fun he knows he can't be blamed for taking his time.
He rubs his thumb over Hoseok's wet rim and bites down his lip as it tries to suck him in.
He takes the condom and rolls it down on himself, then lubes himself up, and tells Hoseok to hold onto the dashboard, and he does.
Kihyun presses in slowly, but doesn't stop until his hips are flush with Hoseok's ass, his back muscles contracting and gasp leaving his lips.
Hoseok spreads his legs and throws his ass back as much as he can, and rolls his own hips before Kihyun can even think of moving.
Kihyun sits there, paralized as Hoseok fucks himself on him like he's a dildo suctioned to the bathroom stall.
“Look at you fucking yourself on my cock,” Kihyun moans. “So bad.”
“I thought your nerdy ass couldn't take it so I’m doing it myself.”
Kihyun tries to fight back, but Hoseok gets up and throws Kihyun to sit on his heels as he sits on his lap and rides him reverse cowboy. Kihyun watches mesmerized as his dick disappears inside Hoseok, his entrance almost disappearing in between his full cheeks.
“Fuck me,” he whines, slapping his hips against Kihyun's.
“Isn't this why you go to the gym all the time? To sit on my cock all you want without getting tired?” Kihyun teases, arm wrapping around to take Hoseok's cock, hard as a rock and on the edge of bursting for the last several minutes. “Since I’m no good at fucking you, I guess you'll have to do it all by yourself.”
Hoseok moans a needy moan that has Kihyun half worried that someone outside might think he's dying. He doesn't care enough, to be honest. Chances are that if someone walked in, he wouldn't even stop.
He won't stop fucking Hoseok until he's become a mess.
He gets tired of it, though, as much as the view is amazing and Hoseok's hips are so fucking skilled, and his cock in his hand is hot and inviting. Kihyun has other plans.
He gets on his back on the bed, and has Hoseok balance himself over him, propped up on his forearms and feet, Kihyun slips his cock in him and fucks up into him while stroking his slick cock.
Hoseok's head falls back besides Kihyun’s, and he takes that opportunity to whisper into his ear how much of a cockslut he is, and how much he loves him.
Hoseok's squeezing him so hard and trembling so much he falls on top of Kihyun when he cums, body spasming like he's lost control of it.
Even when he's crushed under his weight, Kihyun doesn't stop moving, and fucks into Hoseok's tight ass until he's close, biting down on his shoulder as he fills up the condom with a groan.
A second passes and Hoseok falls to the side on the twin bed, almost hitting the wall, and Kihyun compliments him on everything he did, kissing his shoulders where he bit him.
Then their phones vibrate with the same notification and they check the group chat.
“You guys seriously need to check this out,” Jooheon texted. “Meet us at the central station, now.”