Work Text:
There’s only so many layers of clothing you can take off.
It’s what Daeyoung has always answered whenever the age-old question is asked: would you rather always be hot or always be cold? In hindsight, it’s not something that so many people should have to think about. You can get through cold winter nights with a functional heater and about three blankets, but you can’t go through a scorching summer heat wave unless you essentially take off all your clothes, which, from Daeyoung’s experience, still doesn’t do much to reduce the damage. To each their own, he guesses.
Luckily for Daeyoung, the heat in South Korea isn't too bad for the majority of the year. He can tolerate the sun glaring at him on his way to university, and having to change out of his shirt during a particularly hot soccer game isn't unheard of, but summers in Seoul were practically hell.
He knows that he shouldn't complain, as other countries have it much worse than they do, but that still doesn't stop him from exercising his rights to bitch and moan. The heat in Seoul is humid—it's sticky and clings to his clothing like a second layer of skin. It only gets worse when his ruts align with the weather, and Daeyoung has to spend a week just to clean his room. Sion, on the other hand, doesn't care at all to discuss the topic.
They're both aware that it's quite odd for an alpha and an omega to live in the same house. Everyone they've told about their arrangement has asked if they're mates one too many times, and the only thing they could do is awkwardly laugh it off. However, Daeyoung has known Sion since their childhoods, before they both even found out about their subgender. They've always been inseparable, and the fact that they have different functions didn't change that one bit.
Daeyoung would assume that Sion would complain more about the recent humidity in their apartment, considering that the older is more prone to reacting to heat, always sweaty and always exhausted after being exposed in the open for even just a minute. Daeyoung had fantasized about it once—no, twice—thinking about licking all the sweat off the omega’s neck, hearing him whimper as he inches closer to his scent gland.
The first time it happened, Daeyoung promptly stayed in his room for an entire day, repenting for thinking of Sion in such a way. The second time, instinct took over. He locked himself in the bathroom, jerking himself off to completion to the sound of Sion begging for him to mark him. Guilt took over again when he opened the door to Sion quietly watching TV on the couch.
Daeyoung’s aware that it’s quite moronic for him to still stay in the same apartment with the guy he’s been stupidly crushing on, but he doesn’t care. He has self-control, and he’s never going to allow anything to happen between him and Sion.
It’s also stupid that, out of everywhere in Seoul, their apartment is the only one affected by a blackout during the peak of a heat wave.
He was supposed to finish a project on his laptop this afternoon when it abruptly stopped charging. Soon, Daeyoung heard the flock of residents on their floor rushing out and asking about a power disruption. He could only sigh in frustration, the heat already rising to the cotton sleeves of his shirt. It was nearing 12 o'clock, and Sion still wasn't up, so Daeyoung at least hoped that he could sleep through it.
Eventually, he closed his laptop to head over to their landlord. Frustration turned into disappointment when he was told that it would take five hours for the power to come back. Out of any productive or interesting things to do, Daeyoung goes to the convenience store to buy a pack of ice. The only way he was dealing with this heat wave was a cool glass of water.
As soon as he stepped into the living room, Daeyoung swiftly took off his shirt, his bangs already clinging to his forehead with sweat. He pats himself dry with the discarded shirt, but it's ultimately useless when his body releases more fluids after not even a full minute. Defeated, he makes quick work of pouring himself a glass of water, hissing as the cold ice makes contact with his hands.
He notices the time as he carefully sips down the beverage. An hour had passed since he went out, and Sion still wasn't awake. It wasn't unusual for him to sleep in during the weekends, but Daeyoung doesn't know how he could manage to do so when the temperature in the house was already unbearable.
"Sion hyung?" Daeyoung calls out, failing to get a response. He doesn't know why, but his hand reaches for the bag of ice cubes as he walks down the hall. A trail of water drips on the wooden floors, the bottom of the bag already melted.
He gently knocks on his door before speaking again. "Sion hyung?" Again, nothing. The one rule they'd set up before they moved in was that their rooms were off-limits to one another. It didn't take a genius for them to figure out when the other was in rut or in heat, but they didn't need to talk about it, so why should they? Whoever Sion saw during his heats was none of his business, yet Daeyoung would be lying if he said that thinking about it didn't make him irrationally upset and want to throw up.
"Sion hyung," he repeats once again. A puddle has formed right outside of Sion's door, and Daeyoung begins to faintly hear something rocking against the floor. It takes about a minute for him to decide what to do next before concluding that he's going in. He just wanted to see if his best friend was doing well. Yeah, that was it. As much as he avoids complaining, Daeyoung knows that Sion gets easily annoyed when the weather rises above 30⁰C—he didn't want to deal with a sulky Sion.
"Sion hyung, I'm coming in," Daeyoung warns him for the last time, and he barely registers that he'd taken a deep breath before opening the door.
Sion is stripped down to his underwear, quiet panting filling the room as he hastily humps his pillow. A red flush has crept up on his neck, his lips parted while the space is engulfed in his sweet caramel scent. His thighs are trembling now from the amount of pressure he’s putting on the pillow, which has slowly become translucent as more of his slick gushes out of his hole.
Daeyoung tightens his grip on the plastic bag, trying his best to control his instincts.
Sion manages to lift his head up, eyes hooded as he makes eye contact with Daeyoung. “Daeng,” he whimpers, his voice desperate, “it hurts…”
He immediately shuts the door and rushes to Sion’s side, dropping the bag of ice on his bedside table. “Hyung, how do I—what do I do?”
The omega’s movements gradually slow down, his white panties practically transparent with the amount of slick he’s produced. He reaches for Daeyoung’s hand, pleading with his eyes. “Daeng, please touch me, please.”
Daeyoung gulps, momentarily letting go of Sion's hand as he climbs on the bed. He gently lays the older on his back, taking a moment to bask in his beauty. Sion looks mesmerizing like this—needy and covered in sweat. Tiny moans fill up the room as he buckles his hips upward, hungry for any sort of friction.
"Daeyoung, I'm begging you," he says, snapping the alpha out of his thoughts. "My–my heat wasn't supposed to come until next week, but it's just so fucking hot, and I need something, anything," Sion cries. "I need you, Daeyoung."
Truth be told, Daeyoung doesn't have a lot of experience. He lost his virginity to a one night stand during their freshman year when Sion was out of the house. He quickly learned that he didn't care who he'd end up in bed with if it weren't Sion, which is why he's never spent any of his ruts with someone else. Though, Daeyoung doesn't know what to do now that the real thing is displayed right in front of him.
“Hyung, I need you to tell me what you want.” Daeyoung hovers over him, moving the hair strands away from his forehead. “I need you too, hyung, but you have to tell me.”
Sion’s gaze sits on him for a while before sucking in a deep breath and taking Daeyoung’s hand again. “Touch me here,” he whispers, placing the younger’s hand on his chest.
Daeyoung hums, carefully pressing his thumb against Sion’s nipple. His hands are still cold from holding the ice earlier, and Sion’s entire body is burning up so badly that the action immediately has him thrashing around.
“More!” he demands, and who was Daeyoung to deny him?
He starts sucking on Sion’s nipple while he continues to rub the other one. Sion lets out a loud moan before muffling it with his hand. He lets his other hand linger to his clothed pussy, rubbing small circles on his clit as Daeyoung stimulates his chest.
Daeyoung pulls away, and Sion immediately whines at the loss, sitting up. “Why did you stop?” His eyes are glassy with tears, and it does something to Daeyoung’s inner alpha.
“I want to hear you, hyung.” He pins Sion’s wrists to the headboard, eliciting a whimper. “You’re going to come first from me playing with your tits, then I’ll fuck you. Understood?”
Sion simply nods because words feel too heavy for the situation they’re in.
“I said, did you understand?” He applies a bit more pressure on Sion’s wrists, and he actually moans at the contact.
“Yes,” Sion responds, letting out a disappointed sigh when Daeyoung lets go of him. Then, the alpha’s lips are on his sensitive nipples again, triggering his pheromones.
Daeyoung is harsh with his movements, and Sion can’t stop himself from letting out choked sobs as rough fingers play with his nipples. Daeyoung alternates between rubbing them, and rolling them in between his fingers. Sion never thought that he could come like this, but Daeyoung just makes everything feel so good.
Sion closes his eyes for a moment, a high-pitched moan dragged out of his throat when Daeyoung tugs at one of his nipples with his teeth. “Fuck yeah, just like that.” He pulls the younger’s sweat-soaked hair. Sion feels Daeyoung’s finger leave his other one, hearing him reach for something on the side, but he isn’t sure what it is until—
“Daeyoung!” Sion screams, gripping the sheets as the alpha presses an ice cube onto his hardened nipple. Daeyoung pops his mouth off him, making sure that both nipples are soaked with ice. Sion’s back arches off the bed, scrambling to hold onto the younger’s bicep. His chest is already oversensitive from Daeyoung’s fingers, and the difference in temperature is so, so good that Sion wants to cry.
Daeyoung has the audacity to laugh, both amused and endeared. He spreads the wetness throughout Sion’s chest before roughly pinching his nipples at the same time. “You think you can come like this?”
“Y–yeah…” Sion’s voice is shaky as he answers, drool dripping from the corner of his mouth.
“You would look so good pregnant, hyung,” he casually comments like it’s nothing. “Your tits would be so full of milk, and I’d lap all of it up.”
“Mmh… Daeng, please, I’m s–so close.” He feels the familiar coil in his stomach reaching its climax, yet he still resists the urge to rut against Daeyoung.
“Yeah?” Daeyoung taunts before swirling his tongue around a nipple. His hand slowly moves lower and lower until it reaches Sion’s clit.
Sion comes with a silent scream, eyes rolling to the back of his head. Still, Daeyoung doesn't stop sucking on his nipples, milking his orgasm to the best of his abilities. It feels so good and too much at the same time, and Sion should be ashamed that he's already been fucked dumb when his cunt is still deprived.
"Daeyoung," Sion pulls him off with force, panting heavily, "I fucking need you inside me right now," he says, quickly pulling off his panties and kicking it off the bed.
He suddenly feels small with the way Daeyoung looks at him with a hunger he's never seen before. The alpha scans his entire body, licking his lips as he takes in the sight.
Sion scrambles to get on his knees, clumsily fiddling with the waistband of Daeyoung's sweats, pulling it off with his underwear. He gulps as Daeyoung’s dick springs out, slapping against his stomach. He's always had to settle his heats with his useless toys and fingers, but now he had Daeyoung to fuck him stupid every time he needed to.
"Let me prep you first." Daeyoung plants a kiss on the top of his head before gently pushing him down again.
"What is there to prep—"
Daeyoung inserts a finger into his hole without resistance, savoring the way Sion's face contorts into pleasure when he slowly fucks it in and out. It doesn't take long for Daeyoung to insert another finger, properly scissoring Sion's pussy.
"Your cunt is so small, hyung, how am I supposed to fit in there?" Daeyoung curls his fingers upward, hitting the spot that made Sion see stars. The omega has always been sensitive, but the heat and Daeyoung's big fingers thrusting into him elevates everything by a thousand.
Daeyoung momentarily takes out his fingers, making Sion shudder. He watches the omega’s entrance flutter around nothing before messily spreading his slick across his pussy, just shy of where his clit is. Daeyoung licks the slick off the pads off his fingers before shoving them into Sion's mouth. He obediently sucks his own fluids off, the salty-sweet caramel lingering on his tongue. The younger removes his fingers soon after, grabbing two more ice cubes from the bag and inserting one of them into his mouth.
Sion barely has any time to register what he’s going to do until Daeyoung is kneeling in front of his pussy and pressing his mouth against Sion’s clit.
“Daeyoung, what the fuck—” Sion cries, shoving his head in deeper. He presses little kitten licks against his clit at first, letting the ice make direct contact with the swollen bud. Not long after, Daeyoung begins sucking hard, devouring him like he’s been starving for weeks.
The second ice cube remains in Daeyoung’s hand, now partially melted from the heat of his palm. He slowly presses it against Sion’s hole, feeling him squirm against the sheets when Daeyoung circles it around. He continues scissoring his pussy with two fingers, adding another one when he feels that Sion is stretched enough. The rest of the ice cube melts inside Sion’s hole, the liquid adding onto the filthy squelch of his cunt.
“Daeng–oh my god, I’m going to come again!” Sion rolls his hips against the alpha’s face. He feels something different in his belly, trying his best to form a proper sentence. “Daeng, get off, hnghh… I’m going to come—”
Daeyoung looks up through his eyelashes before gently biting down on his clit.
“Oh, fuck,” Sion whimpers, his whole body tensing up as he squirts against Daeyoung’s entire face. The younger is still lapping at his folds, licking every single drop of liquid. Daeyoung moans against Sion’s clit when he feels his pussy clenching against his fingers, speeding up his movement.
He stops when Sion forcefully pulls him up, locking their lips together. Most of Daeyoung’s face is still wet with his own slick and they’re both so sweaty, and it should be disgusting, but it’s not. Sion moans as he feels Daeyoung’s cock brush against his clit, allowing the latter to insert his tongue in his mouth. Drool drips from the side of Sion’s mouth from how messy they’re being.
A string of saliva is connected between them after they part, having to catch their breaths.
Daeyoung finally positions the older on his knees, running the tip of his cock along Sion’s entrance. He coats himself with the omega’s juices before placing his hands on his hips. “Hyung, I’m going in now,” he whispers.
It only takes one thrust for Daeyoung to fully put his cock inside him, and Sion feels so fucking full.
“Oh my god,” Sion sobbed, crying into the pillow. He can feel his cunt stretch around Daeyoung’s girth, his cock hitting every sensitive spot inside. “Oh my god, yes, you feel so good.”
Daeyoung pulls out until only his cockhead is inside before slamming back into Sion’s cunt.
Sion screams at the intrusion, desperately pushing back against Daeyoung’s thrusts. “Yes! Yes, hnggh—just like that, don’t stop!”
Daeyoung’s pace is brutal, each thrust hitting deep into Sion’s pussy. He knows it’s anatomically impossible, but Daeyoung is so big that it feels like he’s hitting the entrance of his cervix. Sion moans at the thought of Daeyoung opening up and filling his cervix that it’s impossible for him to not get pregnant.
“Sion hyung, I’ve wanted this for so long.” Daeyoung pants against his ear, licking his earlobe. “I’ve wanted you like this for so long, hyung.”
He moans at Daeyoung’s words. “Me too, Daeng,” Sion replies. He wants to come again so badly, and he knows that Daeyoung is going to knot him soon, but Sion’s so needy that he reaches below to frantically rub his clit.
His hand is swatted away by Daeyoung, replacing it with his own. His fingers are rough compared to Sion’s, matching his pace with his thrusts. It only takes a few minutes for Sion to squirt again, more intense than last time.
“Daeng,” Sion moans weakly. “Daeyoung, love being your puppy,” he rambles incoherently, hips still chasing Daeyoung’s release.
“Mhm?” Daeyoung smiles against his neck, licking a stripe of sweat. Sion whimpers as he continues licking and biting his neck, getting dangerously close to his scent gland.
Daeyoung looks down and sees that his knot is already forming at the base, speeding up his thrusts again. He nips at the skin around Sion’s gland, carefully biting it. “You like this, don’t you? You like being mine and being fucked like this.”
Sion nods weakly, too tired for words. Daeyoung has stopped thrusting into him, settling on grinding into Sion’s cunt to completion. He feels everything this way, Daeyoung’s thick cock dragging his sweet spot every time he grinds his hips.
“Daeng‐ Daeyoung,” he moans, lazily still pushing back. Sion looks back at him, eyebrows furrowed and eyes half-lidded. “I want you to breed me.”
It only takes a second before Daeyoung locks them in place with his knot, both of them moaning at the sensation. Daeyoung’s hips stuttered as he chased his high, dropping his head on Sion’s shoulder as he felt Sion’s cunt still clenching around him. Soon, the first spurt of cum painted Sion’s spent pussy
Sion whimpers as he feels the knot stretch him open, chest heavy from exhaustion. Daeyoung peppers kisses on his shoulders, gently rubbing comforting circles on his back.
They don’t know how long it takes before Daeyoung’s knot deflates, but the next thing Sion remembers is the younger carefully pulling out of him, while he felt all of Daeyoung’s cum spill out of him.
He feels Daeyoung get off the bed, immediately reaching for his hand. “Stay.”
Daeyoung laughs, squeezing his hand. “I need to clean you up, hyung.”
Sion snickers at this. “I just told you my heat started,” he says, a pang in his back hitting him as he forces himself to sit up.
He pulls Daeyoung in closer, whispering against his ear. “I don’t think you’re going to get me clean anytime soon.”
The younger glances at the forgotten bag of ice cubes now turned into a puddle of cold water. He looks back at Sion and sighs, accepting that they’re not going to get any rest this week.
Daeyoung captures his lips in a kiss again, crawling over him. “What better way to spend a heat wave, hm?”