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The first thing Hanwool noticed about Kim Sehyun was his wide eyes. Cute and dark, round like a little puppy’s. He knew something was off about the boy, something he wanted to dig in and discover about the beta — he’s an alpha, he should desire an omega and desire the concept of breeding and mating for life.
Sehyun really fucking screwed that up.
He’s obsessed in a way that borders on unhealthy. He knows this but truly, he doesn’t care. Hanwool will watch Sehyun, he’ll follow the beta around and he’ll glare at any other alphas that try to pursue him until they sigh in defeat.
Weeks go by and Sehyun handles it fine. He knows of Hanwool’s eyes on him, but he doesn’t mention it to anybody and does nothing about it.
It’s tiring, though, to have an obnoxious alpha watch him. The only alpha in his life is Jiwoo; she’s lovely and protective, always scents Sehyun despite his inability to notice — the other two in the group are omegas, including her girlfriend who sports a fresh mating bite on her neck.
Jiwoo isn’t an obnoxious alpha, she’s a proper one. Hanwool, however, is just a jackass with too much time on his hands.
Sehyun is going to do something about it.
Maybe it’s because he’s been feeling under the weather the past few days, but Hanwool’s behavior has pissed him off more than usual. So, as he slams his fist against Hanwool’s front door, his pout is apparent.
He knocks once more and the door swings open, Hanwool peering out with a scowl that quickly disappears when he sees the man on his porch.
“Ah,” he begins, grinning smugly, “hey, princess.”
“Don’t,” he huffs, “don’t call me that. You’ve been following me, right?”
“I’ve been found out,” he pouts, “just a bit, I have. I didn’t know you even noticed me, baby.”
“I’m not your baby-”
A sharp pain. Sehyun can’t identify it, just an overwhelming ache along his entire body that leads him to keeling over slightly. He whimpers, breathing heavily as he begins to break into a light sweat.
“Fuck…” he grumbles, “what the fuck…?”
“…holy shit,” Hanwool mutters, watching Sehyun with an astonished expression. “You’re-”
Sehyun cuts him off, shaking terribly. “I’m sick,” he insists, “I don’t want to hear your bullshit — it’s just the flu, okay?”
“Princess,” he begins, gentler now, “you’re telling me your sense of smell isn’t heightening right now?”
Admittedly, Hanwool’s right. The alpha’s scent in front of him is strong, overbearing but almost comforting, like a heavy yet cozy blanket. It’s like a mix of metal, citrus, and charcoal, sinking into his skin in a gentle assault.
“…it’s because I’m sick,” he grumbles, “it’s just overstimulating because I’m sick.”
“Or,” Hanwool begins to grin, “you’re in heat.”
Sehyun stammers, an angry expression on his face. He’s ready to yell at Hanwool, calling him ridiculous, when another wave of severe discomfort hits him roughly.
Another whimper as he curls into himself.
“Come inside, I’ll grab you some water.”
He wants to fight, he really does, but the scent of the alpha is easing the pain just a bit. So, he nods bashfully and follows Hanwool inside and allows the man to close the door behind them. He’s ushered to the couch, where Hanwool rubs his shoulders for a moment before grabbing him a glass of cold water.
“I thought you were a beta,” Hanwool notes as he joins Sehyun on the couch.
“I - I am,” he whispers, taking the water greedily and downing it. “I would’ve presented by now if I was anything else.”
“You’re in heat,” Hanwool coos, brushing Sehyun’s hair out of his eyes. The boy purrs, still holding himself tight. “I can smell it, baby.”
“…I can’t be,” he whines, letting out a sob as another painful wave hits him. “Fuck…!”
Hanwool tugs him close, inhaling Sehyun’s soft rain scent shamelessly and nuzzling into him. He wants to take Sehyun right there on the couch, fuck him stupid until he’s swollen with his pups, but Sehyun needs better than that. He’s naive — he hasn’t even admitted to being an omega, something Hanwool found out mere minutes ago, and he’s in heat.
“Why is your house so hot? Hanwool-”
The alpha brushes the hair away from Sehyun’s forehead, cradling his face. “You’re in heat, baby. You’re an omega,” he continues to explain, “you’re okay, I know it hurts. Gonna let me take care of you?”
Sehyun’s doe-like eyes stare up at Hanwool with tears brimming the redness of his waterline. “…does it help?”
“Yeah,” he promises softly, “gonna stuff you with my knot; it helps. Swear, baby.”
The omega lets out a shaky breath. “Please,” he whimpers, “please, alpha…?”
Oh, he’s fucked.
Hanwool helps Sehyun up on shaky legs, wrapping a protective arm around his waist and leading him into his bedroom. Once they’re in, Sehyun presses his back to the closed door and lets out trembling breaths. Hanwool inhales his intoxicating scent up close, nose brushing against the glands of his neck and sharp teeth brushing against where a mating bite would go.
Hickey after hickey shows up on Sehyun’s skin underneath Hanwool’s mouth, rough and claiming and downright sinful. Sehyun feels a gush of slick slip from his cunt, soaking his boxers and dripping onto his sweatpants.
“What-”
“You’re okay,” Hanwool promises, “that’s normal — gonna help you take me like a good little omega.”
Hanwool tugs off Sehyun’s shirt, staring at the frail body in front of him. A wave of overwhelming protectiveness hits him, beyond any lust and instinct to breed — he ignores that for now. Sehyun sighs in relief from the rush of cool air that hits his sweat-shining skin.
He stares down at the boy’s stomach, eager at the litheness of the omega’s body; he knows his cock will show in his stomach and it makes him unfathomably harder.
Finally, they kiss. Their lips collide harshly, tongues clashing and lapping desperately at each others’ mouths while Sehyun attempts to paw at Hanwool’s cock.
When they pull back, Hanwool quickly strips himself of his top before dragging Sehyun to the actual bed. Sehyun’s back hits the mattress and Hanwool wastes no time helping the omega out of his sweatpants.
“Baby, look at me,” Hanwool begins, guiding Sehyun’s face by his jaw to lock eyes, “have you ever been with an alpha?”
Sehyun shakes his head, embarrassed. “Nobody.”
Hanwool’s grin turns downright sinister. “Nobody?”
A nod.
“Good,” he purrs, “‘m gonna ruin everybody else for you — alpha or not.”
Sehyun moans, hips chasing upward and seeking out any form of contact. “…you?”
“Me?”
He nods with a pout. “I wanna know…”
“Just Minhwan,” he frowns, “led me through my first rut, that’s it.”
Hanwool takes off his shorts, cock straining against his boxers and leaking onto the fabric.
“I’m gonna take these off,” he informs Sehyun, tugging at the waistband of the omega’s boxers. “Lift your hips, princess.”
With a pained whine and a sniffle, Sehyun obliges. His boxers come off, the material clinging to his cunt for a moment before being tossed aside. Hanwool just stares for a moment, admiring the soft pink that stands out against the boy’s skin. It’s glistening with a heavy amount of slick, and more continues to leak out and shine in the light from the room.
Hanwool can’t help but drag a finger along his pussy, scooping up a bit of slick and grinning when Sehyun practically seizes from the contact. He dips the digit into his mouth, tasting the substance and moaning around it.
“Gonna get you ready now,” he says, voice low and gravely, as he presses two fingers to his twitching hole.
Sehyun, though, shakes his head as his bottom lip quivers. “No! No,” he pleads, “I just want it, alpha. Now-”
“Don’t tempt me,” he growls, sinking both fingers in at once. The initial clench drives him mad, and when he reaches his knuckles, slick pours down his hand. He spreads his fingers, preparing Sehyun’s hole roughly and quickly due to the omega’s impatience and fight.
A third finger joins soon enough. He curls them and presses up — Sehyun sees stars. Hanwool pumps his fingers in and out of the omega’s cunt, leaning down and nuzzling against his scent glands again.
Sehyun cums hard.
A gush of liquid splashes against Hanwool’s thighs, causing him to gasp into Sehyun’s ear. He’s sobbing, shaking harshly while letting out noises that might make Hanwool cum untouched.
“Good job,” Hanwool coos gently, “good boy, you came so well for me.”
Hanwool continues to ram his fingers into Sehyun’s pussy, listening to him mewling and whining while he squirms.
The unbearable pain slowly morphs into something easier to handle. The ache is still there, but it’s easier to relax and take the fingers and find more enjoyment rather than a distinct and feral need.
When Hanwool removes his fingers, he sucks on them. Lapping at the slick and residue coating the digits like a five-star meal, maintaining eye contact with Sehyun the entire time.
He takes off his own boxers and Sehyun gasps quietly. “Alpha,” he whimpers, staring unabashedly. “So big… I want it. Now-”
Hanwool manhandles Sehyun, spreading his legs to wrap around his hips as he presses his cock to Sehyun’s hole. He slides in slowly, stretching the omega obscenely and in a borderline disgusting manner. The alpha barely makes it an inch inside before another spray hits him, covering his abdomen as Sehyun cums again.
The omega gasps, hands gripping into the sheets as he spasms. “Alpha-” he cries out, nearly screaming.
Hanwool moans loudly as he feels Sehyun’s cunt squeeze him during his second orgasm. He pushes further inside after a moment, watching in utter amazement as Sehyun’s lower stomach begins to rise, a bulge forming just as he expected. When he bottoms out, the sight is disgusting and fucking gorgeous.
The first slam into Sehyun hits both men hard. A spark crawls through Sehyun’s body and he sobs before his legs are bent morbidly into a goddamn mating press.
“You’re flexible,” Hanwool chuckles, kissing Sehyun’s knee and grinning. “So tiny, too. Do you see me in your stomach?”
Sehyun glances down before throwing his head back and whining. “Screw you,” he mumbles, “just give me your knot, hyung…”
“Tch… fucking impatient,” he grumbles, tapping Sehyun’s cheek in mockery of a slap. “Two orgasms in and you’re already sick of me?”
Sehyun pouts, clenching down hard and causing Hanwool to groan. “Hate you,” he huffs, “fucking hate you… you stalker-”
Hanwool pulls almost the entire way out before driving back in roughly, the bulge pressing out obscenely as Sehyun cums a third time.
“You hate me?”
The omega quivers, body beginning to grow tired despite his unrelenting heat.
“Y - Yeah.”
Both boys know he’s lying. Hanwool knows it, and Sehyun knows it.
“Then why are you drooling down my cock? Letting it spear you open so well?”
Sehyun huffs. “You’re just-” a gasp comes with another thrust, “you’re just another alpha to me…”
Hanwool continues to fuck into Sehyun at a steady rhythym, folding the omega even more in half as his mouth presses against the gland on his neck.
“I hate y-”
Hanwool bites down rough. Blood soaks his mouth, filling it as he laps at the mating bite he left on Sehyun with a moan. It hurts so fucking bad, a pain even more unbearble than the heat itself for Sehyun.
Yet, he cums a fourth time. The gush streams rapidly, coating Hanwool’s lower body as he continues his maintenance on the bite.
“You hate me,” he pouts, “but you just came from me making you my omega.”
“Alpha,” he whispers, thoroughly exhausted, “give me your knot-”
Hanwool’s dick inflates at the base, lodging the alpha into Sehyun as he cums finally — it spurts out of his cock, flooding Sehyun’s pussy to the point where the omega can practically feel it in his stomach. It’s overwhelming, the sensation of a load of cum filling his cunt, a mating bite causing his pheromones to soar, and a knot splitting him open.
It’s too good.
Hanwool slowly allows Sehyun’s body to relax, maneuvering him into a less straining position as his knot stays put. He knows it’ll be a while until it goes down, so he wants to keep Sehyun as comfortable as possible in the meantime.
“My pretty omega,” he coos, feeling the way Sehyun wraps his arms around Hanwool’s neck and tugs him close in a gentle embrace.
Sehyun isn’t sure how long he slept. When he wakes, though, he’s washed and redressed in Hanwool’s clothes. Hanwool is next to him, curled up in just boxers and a tank top.
“Morning, sleepyhead,” he teases quietly, voice groggy. It’s clear that he hasn’t slept yet. “I put your clothes in the washer.”
The scent of gentle rain fills Hanwool’s senses, making him smile. Despite Sehyun’s tired pout, he can tell without a doubt that he’s happy — utterly content.
“Thanks,” he mumbles, still nuzzling against the pillow to seek out the prior comfort from being asleep. Still, he releases pheromones to express his silent joy. “…you bit me.”
“I did.”
“Have you wanted to do that for a while?”
Hanwool nods, combing his fingers through Sehyun’s hair. “Since I first saw you.”
“Well,” he grumbles, sitting up and stretching. “Let me bite you back. It’s only fair.”
The alpha’s eyes go wide but he grins and nods eagerly.
So, Sehyun sinks tiny fangs into Hanwool’s neck and takes in the overwhelming scent of their pheromones colliding.
—
A few weeks pass without a hitch. Sehyun avoids his friends, unwilling to announce his new discovery to them just yet.
Finally, though, he decides to join their study session.
“Ah, Sehyun!” Gamin perks up, waving excitedly. If he notices the subtle scent of Hanwool mixing with rain, he doesn’t comment.
Jiwoo, however, does.
“I can smell you,” she huffs, “you smell like an alpha.”
“…yeah,” he grumbles, fidgeting with his pen, “found out I’m just a late presenter.”
Heewon gasps. “You’re an alpha, then?”
He shakes his head.
“Then why do you smell like Hanwool? He’s an alpha, so if you have his scent… you’d be an alpha too, surely,” Gamin notes with a pout.
Jiwoo’s jaw drops. “He’s your alpha?”
A flustered nod. “He helped me through my first heat,” Sehyun grumbles, “and it spiraled from there.”
All three are silent, just staring at Sehyun with matching baffled expressions.
“In unrelated news,” he hums, “you guys might be aunts and uncles soon.”