Work Text:
He hadn’t intended for any of this to happen, but now that it had, he couldn’t help but wish it happened sooner.
Niki spent the past three years hiding the fact that he was an omega. Why wouldn’t he? The world was cruel to omegas, treating them like nothing but breeding machines. He didn’t want that. He didn’t want to be seen in that light. So he hid as a beta.
He did a pretty good job of it. He kept scent blockers on him at all times, always showered alone, never got too close to anybody, and took heat suppressants. His heats weren’t bad, they hadn’t gotten to that explicitly horny stage yet (but there was that annoying need for an alpha to be by his side and calm him), and he made it all the way into Enhypen as a beta.
They debuted over a year ago, and things were looking great. Maybe, after his pack had seen how well he can handle himself and after seeing that he didn’t need an alpha to take care of him, that he can function just fine like the rest of them, he can reveal to them his true secondary gender.
But not like this.
Not with his heat blowing through his suppressants unexpectedly.
It was bad. Really bad. Luckily he was alone in the dorms when it happened, but he knew he wouldn’t be for long. And just when the thought crossed his mind, Jake came back home earlier than everyone else.
Sunoo, Jay and Jungwon all had school, Heeseung was doing some extra vocal practice at company and Sunghoon was making a quick stop home to see his family. Niki had taken the day off cause he wasn’t feeling well.
Now he came to realize it was his heat, and he had hit that horribly horny stage with this uncontrollable need to be bred like a good omega.
“Niki, I’m back! The others will be here later!” He heard Jake call from the front door. Niki was still in bed, curled in on himself and half naked under the sheets. Jake was one of the few people he didn’t want running in on him while in heat since he was an alpha (including Jay and Heeseung). However, right now, the omega in him was growing excited with the thought of an alpha being here. Maybe he could help.
“Niki?” He called again when he didn’t get a response. The youngest wasn’t sure what to do, what he could do. With how intense his heat was from suppressing it for so long, he was sure Jake would lose all control the moment his scent hit his nose.
“Niki, hey are you-” He opened the door.
And there was Niki, incompasitated in bed, letting off sweet and aroused pheromones.
Jake froze, nostrils flaring and pupils dilating.
“Oh.” Was all he said, and some part of it almost sounded menacing. It was deep and gravelly, and he hated how attractive it sounded.
“Niki…so you were an omega this whole time?” He questioned, shutting the door and coming closer.
“Hyung~” he whimpered helplessly. “Please.”
“Please, what?” He asked coldly.
He should have known.
Why would Jake and the others be any different?
He was an omega, afterall. A little breeder for the others to use.
“You need help, little omega?” Jake growled, his spicy pheromones saturating the air and forcing Niki into submission. He was incapable of responding, the only thing leaving his mouth here mewls and groans of pain.
Jake yanked his blanket off his body, Niki curling away from the cold of the room, feeling far too sharp on his rapidly heating body. Jake unexpectedly forced his knees apart, a chuckle rumbling in him when Niki’s secret was revealed to him.
“So you do wear panties. Ha! Look at you, you’re soaked.” Niki wilted in embarrassment, turning his face away with flamed cheeks as he weakly pushed at Jake’s hands.
“N-No.” he managed. Then he felt Jake's fingers press against his pussy through the soaked fabric, heat pooling in his stomach and back arching with a soft mewl leaving his mouth. He slapped a hand over his mouth and screwed his eyes shut.
“Shit, Niki. You say no, but your body is telling me the opposite.” Jake crawled onto the bed, kneeling between Niki’s shaking legs.
“You’ve been fighting it all this time, haven’t you? Your instincts, your need to be bred.” Jake began rubbing his fingers in circles right over his clit. Niki jolted from the stimulation, never having been touched like this.
“Fuck, you’re so cute. I can’t believe we had no idea you were an omega. Look at you. You’re always such a disobedient little shit, and now that I’m touching you like this your mouth is shut.” Jake smirked down at Niki.
“I could get used to this. The others would like it too.” Niki dreaded the moment everyone found out about what he was. He could barely handle this. The only thing getting him through this was his omegan instincts to just submit to an older alpha.
Jake’s eyes suddenly lit up.
“Oh wait. It just hit me. Is this why you always like riding on my back? Does it feel good to have me between your legs Niki?” Jake taunted. It was true; Niki did like having Jake between his legs. But that Jake was different from this one. That Jake was sweet and warm, and smelled of snickerdoodle cookies. That Jake was the one he envisioned being the most accepting of Niki, and then he would have presented himself to him in hopes of Jake being gentle and loving when taking his virginity.
This one was cold and cruel, and his scent was such a sharp, raw form of cinnamon bark that in nearly burned his nose, but a part of Niki liked it. A sick part of him wanted Jake to use him however he liked. Fuck him hard and make it nasty. Fuck, why was Jake suddenly looking hot above him?
Jake peeled Niki’s panties off, watching as a string of slick stuck between the damp cloth and his clean shaven cunt.
“Fuck.” Jake growled. Niki whimpered and covered his face with his hands. Jake quickly pried them off, trapping both his wrists in one of Jake's hands above his head. Niki was completely exposed like this, and he had no way of running…
Not that he particularly wanted to, not in this state.
“Look how pretty you are. All slicked up and submissive, ready to take an alpha like you’re meant to.” Niki felt slick spill out of his hole. Jake used his free hand to collect the slick on his fingers and stick it in his mouth. Another hot burst of embarrassment flashed within Niki’s body. Jake’s hummed, closing his eyes and savoring the taste before pulling them out and staring down at Niki with lust clouded eyes.
“So fucking good.” He said, then started rubbing them between Niki’s folds. His fingers played with his clit, his labia and his hole, making Niki squirm as more slick gushed out and heat pooled in the lowest part of his abdomen. Then he pushed them in, going straight for two rather than bothering to work him open with one. The slick made it easy, but it was still a tight fit.
Niki gasped, squirming to get away from his fingers, the stretch being both too much and not enough. His mind wasn’t sure of what to make of any of this. He was partially scared, partially horny, partially disappointed (in Jake) and partially totally okay with all of this.
“So tight, Niki. I bet you’re still a virgin huh?” Jake curled his fingers, making Niki arch off the bed with a mewl.
“Y-Yes.” He said shakily, voice cracking from the adrenaline and all sorts of emotions and hormones clogging his heat driven brain. It felt so good. So so fucking good. How had he not done this before? Why hadn’t he told anyone sooner?
Jake kept a brutal pace, finding Niki’s sweet spot and hitting it over and over again. Niki was squirming and moaning, unable to control his sounds as he came closer and closer to his orgasm. Then Jake used his thumb to rub circles over Niki’s clit. It was too much in such a short amount of time, Niki having never felt anything like this before and cumming all over Jake’s fingers with a loud cry. He was shaking so bad, and his vision was clouded with stars and black edges.
When he came down from his high, Jake was undoing his jeans and kicking them off, along with his boxers. Nervousness pooled in Niki’s stomach in place of pleasure with seeing how big Jake was, and the knot that was forming at the base of his cock.
“W-Wait, hyung, I’m scared.”
“Relax, Niki. Your body was made for this, especially now since you’re in heat. You’ll be fine.” Jake brushed off, pressing the head of his cock against Niki’s hole. Niki clenched his teeth and gripped the sheets in his hands, bracing himself.
It hurt. The stretch was a lot and it ached, but at the same time something in him was going wild. It was preening and jumping with joy, curling in his belly and clawing at his insides as it begged for more. Since Jake wasn’t even halfway in, more was what he got. Niki whimpered, mind dizzied with pain and pleasure and the need for it to both stop and keep going all at once.
He tried to focus on taking deep breaths and relaxing his body, and when Jake had finally managed to force his way in, he immediately began pistoning in and out of Niki. Niki went limp, completely pliant as the omega in him finally completely submitted to the alpha. The thought of being bred and used to please an alpha had all of his insides warm and fuzzy.
Tears welled up Niki’s eyes. From the realization that Jake took his virginity; from the realization that he was found out; from pain; from the pleasure; from the joy of being able to fulfill the role he was born into; from the joy of pleasing Jake.
“There you go,” Jake huffed, grunting and panting as he fucked Niki into submission. “See? I told you. You’re made for this. Fuck-so good Niki. Such a good little omega.” Niki mewled in response. The omega in him was preening and bouncing with joy yet again. It felt good to finally give in to his instincts. To give in to what his mind and body have been deprived from. To give it all to Jake. To let Jake take it from him.
He was Jake’s omega.
He was Alpha’s omega.
Jake was hitting every spot perfectly, like Jake’s cock was made for him.
No.
Like he was made for Jake.
“Hm, Alpha~” Niki mewled, clenching and unclenching the sheets as he felt his next orgasm coming already.
“Hm? Yes, Omega?” Niki mewled higher, flinching when Jake pressed his thumb back onto his clit again.
“S’good.” He whimpered, shivering when Jake’s thumb moved in gentle circles, almost like he was teasing him. His eyes were dark, almost black with how wide his pupils got, and sweat was dripping down his skin, collecting clumps of his dark hair against his forehead and some of it falling in wet strands over his face.
“Of course it is. I’m fucking you, and you’re in heat. It’s supposed to feel good.” Jake suddenly smirked down at him, leaning further down and hitting a different angel. His nose brushed against Niki’s, making the omega blush.
“I bet you want me to knot you too. You probably can’t help it.” He rapsed, thrusting harder. Niki cried out weakly, arching his back and feeling himself squirt all over Jake’s pelvis. He was embarrassed yet again, quickly covering his face to try and hide himself.
“Fuck, you liked that didn’t you.” He said, more like a statement than a question. Niki sobbed, nodding behind his hands. Jake pulled them away and trapped them against the bed.
“You want me to breed you, right? Knot you and fill you with cum? All you omegas want that, that’s all you’re meant for. To be fucked and knotted and filled with pups.” Slick gushed out of Niki uncontrollably, the heat in his stomach much hotter than before.
“Yes! I want it! I want it, please hyung. Alpha!” He sobbed. Jake grunted and dropped his head against Niki’s neck, biting and licking at his skin. He turned his head to the side in submission, giving the alpha more access to his neck and more specifically, his scent gland. Jake bit hard enough to make Niki squeal, but not hard enough to break skin.
Then he felt Jake’s knot hitting his entrance. Before Jake could properly knot him, Niki came again, shaking under Jake. Jake cursed under his breath, almost instantly knotting Niki and filling him with cum.
Fuck, it was a lot. Jake had already stuffed Niki full with his cock, now he’s got a knot and almost way too much cum filling him.
As everything slowed to a stop, and a strange sense of content and wholeness began buzzing in his body. Even when his mind was cleared of the heat (for a brief moment), he still would have let it happen all over again. Maybe it wasn’t soft and gentle and loving like he had imagined, but fuck was it good, and it was with Jake no less.
He turned his head to see Jake was staring at him with wide, fearful eyes.
“Oh my fucking God, Niki I’m so sorry.” He rushed out. He sat up, frantically looking around and waving his arms around like he didn’t know what to do with them.
“Oh my God oh my God. Fuck!” In his frantic movements, he accidentally tugged on where they were connected, causing Niki to yelp in pain as Jake’s knot pulled on him.
“W-Wait, Jakey hyung stop moving, it hurts.” He whined. Jake immediately stilled, looking down at where they were stuck together.
“Shit.” He looked back up at Niki.
“I’m so sorry, fuck. I don’t know what came over me. I swear I don’t mean the things I said. What I said about you. I’ve never been around an omega in heat before…fuck that’s not an excuse I’m just…I’m so sorry, please don’t hate me.” Jake was quickly becoming distressed when the realization of what he did hit him. His lust driven haze was gone now, that much was for certain, but his freaking out was bleeding into his pheromones and it was making Niki anxious.
“Jake hyung, please calm down, it’s okay-”
“No it’s not! Niki I used your vulnerability against you. I was out of control. I should stay away, I’m so-” Niki gently grabbed Jake’s face in his hands, cutting the spooked alpha off.
“Hyung, I said it’s okay. I actually had meant to tell you about all this…but my heat hit before I could tell you and the others. I’m the one that should be sorry,” Niki looked away guiltily. “If I had opened up about this sooner, this might not have happened this way…but honestly I’m not entirely disappointed it did.”
Niki felt his face flush as he couldn’t help each confession from spilling out. Once he got started he couldn’t stop.
“I…actually wanted to…present myself to you once I told everyone about me being an omega.” He muttered shyly. Jake’s breathing seemed to have stopped, mouth falling open just slightly.
“I hope you’re not mad at me hyung.” He said softly, letting his hands fall back down beside his head. Jake blinked rapidly at him, his mind trying to process everything. Eventually he just dropped his head against Niki’s shoulder. Unsure of what else to do, Niki just placed a hand on the back of Jake’s head and gently played with his soft hair.
Jake lifted his head up and peeked at Niki.
“So…should I stay with you for the rest of your heat or do you want me to leave when my knot goes down?” Niki giggled.
“You can stay for my heat~” he said playfully. Jake finally smiled, humming and brushing his nose against Niki’s affectionately. Niki purred at the contact, chest fluttering.
The both of them stiffened however, when they heard the front door opening, voices collecting in the air and making the two panic. They were still connected and it didn’t look like Jake’s knot had gone down enough to pull out yet.
“Shit, uh, what now??” Jake panicked. Niki hummed, rolling his hips up and making Jake freeze, his eyes clouding up again.
“Let’s make them watch. Show them which alpha I belong to.”