Chapter Text
Sunghoon moaned as Heeseung swallowed around his dick. His back curved off the bed, mind completely blank and void of anything but Heeseung. He pulled at where his hands were tied, high up behind his head and onto the bed, he couldn’t help struggling a little bit. It was a lot; they had been going at it for hours and he had come three times by then. He simply couldn’t take it anymore. He was shaking, muscles tensed, drool running down his chin, tears down his cheeks; a big stain of slick, semen, saliva and lube underneath him. But Heeseung didn’t seem like he wanted to stop.
It had been Sunghoon’s idea. They were alone at the dorms, no risk of getting caught by anyone inside Heeseung’s room, it had seemed like a great idea. Now, though, as Heeseung continued to stimulate him while holding him still, both hands at his hips, with great strength, he was starting to realise he hadn’t thought this through.
“You have to come one more time, princess, or you are not getting fucked.” Heeseung stopped sucking him just to say that. Sunghoon took a moment to understand Heeseung’s words.
“I c-can’t…” he sobbed. He was tired and everything hurt, and he loved it but he honestly just wanted Heeseung’s dick in him.
Teasingly, Heeseung brought one hand down slowly only to abruptly push two fingers into Sunghoon, who choked on a moan at the sudden movement. “Then I guess you don’t want my dick…” Heeseung was taunting him, pressing and moving his fingers around so he couldn’t think. Sunghoon just wanted to be knotted.
“I- I do! I w-want, please, Heeseung, alpha… I need it,” he cried, falling onto Heeseung’s plan.
“You have to come one more time.” He pressed harder against Sunghoon’s sweet spot, making him cry and curl his feet.
“Please!” Sunghoon screamed, “p-please, t-the others will be back s-soon.” He said between broken moans and gasps.
“You better hurry, then,” Heeseung whispered, sounding almost mean. Sunghoon should have known better than try and get Heeseung to give in.
Sunghoon wanted to scream at him, he just wanted to get fucked. Heeseung had a great, big dick and he was amazing with it, but Sunghoon was questioning if it was worth all of this. Yet, Heeseung didn’t let him dwell on it for long as he began stroking his dick while continuing to stimulate his prostate. Sunghoon couldn’t help the almost pained moans that came out of his mouth, and Heeseung was enjoying every single sound he was making.
He squirmed under Heeseung’s touch, and as much as he would like to complain, he enjoyed it as much as Heeseung if not more. He liked the way Heeseung played with him however he wanted and that he couldn’t do anything about it. He loved the way Heeseung’s hands just knew where to touch him to set him on fire. They had the time to explore each other and what they liked, get to know what made the other go insane with pleasure.
Right in that moment, Heeseung was torturing him in the best way possible. But they really didn’t have the time for it, if they didn’t want the others finding out. He was aware Heeseung wouldn’t fuck him like he wanted if he didn’t do as he said, so he had only one option.
Forcing an orgasm was an ability he never really thought he’d need. Yet, there he was, making a conscious effort to come just so he could get fucked. All his muscles were contracting sporadically when he felt it. With a soundless cry, Sunghoon finally came one more time. It seemed, though, that he may have been putting too much strength into it. A moment or so after he came, he squirted onto Heeseung’s face and hands. He couldn’t stop it, he just let it happen and then went boneless onto the mattress.
His body quivered all over and he could barely breathe. It had been a lot and he didn’t have any strength left in his body to either stop the trembling or get himself up. It didn’t matter, Heeseung would be doing all the work after that.
“Good boy, I knew you could do it,” Heeseung kissed his thigh before moving his legs further apart. “You can get your reward now,” and with only that as a warning, Heeseung pushed his cock right into Sunghoon’s sensitive hole.
No matter how many times they’d done it, Sunghoon would never get used to Heeseung’s size and strength. He moaned and basked in the way Heeseung’s cock made him feel so small. The truth was, Sunghoon wasn’t as small as most omegas and when compared to Heeseung, they weren’t that different. Yet, whenever Heeseung was inside him, he never failed to make him feel like he was five times smaller than he actually was. And he loved it. He loved feeling so small and fragile, like Heeseung could split him in half if he wanted to.
Heeseung wasn’t giving him any room to breathe, thrusting into him without stop and without waiting. He knew Sunghoon could take it, so he had no reason to. Even if his moans had become just gasps for air that constantly got cut off by the force of Heeseung’s pounding, Sunghoon didn’t want it any other way. Normally, he’d hate how messy, wet and dirty everything was, but he could make an exception for when he was getting fucked dumb like this. So, he didn’t even stop to think or notice that he was drooling heavily by then.
Heeseung, though, did notice. “So dirty…” he muttered, pulling a hand up to forcefully grab Sunghoon’s chin. Heeseung pressed his thumb onto the trail of saliva harshly and moved it upwards into Sunghoon’s opened mouth. As if by instinct, Sunghoon closed his lips around Heeseung’s thumb and started sucking. “Such a well-behaved pup, didn’t even have to tell you to suck,” Heeseung mocked him, he knew he was being made fun of, but Sunghoon didn’t care. “Come on, you have to swallow,” Heeseung pushed his thumb hard against Sunghoon’s tongue, which made it hard for Sunghoon to do as he was told, but he still tried.
A laugh escaped Heeseung at Sunghoon’s desperate attempts to swallow the excess saliva, before finally releasing his chin. He put both his hands behind Sunghoon’s knees and pushed them as far against Sunghoon’s chest as they would go. Sunghoon knew this meant he’d be fucked hard enough to feel it for at least a couple of days. He couldn’t wait to still feel like his legs would break during practice, and he wasn’t even being sarcastic.
“F-fuck, alpha,” Sunghoon managed to choke out as Heeseung relentlessly drove into him. “I’m- I’ll c-come,” he couldn’t be sure Heeseung could understand what he was saying, he wasn’t even sure if he was saying it. What he did know, though, was that Heeseung could tell that he was close, he could tell as soon as Heeseung spread his legs apart and fucked even harder and faster into him.
Sunghoon knew he wouldn’t be able to manage coming and continue to be fucked by Heeseung at this pace. If he came before Heeseung again, he knew Heeseung wasn’t going to stop and he’d be ruined. He closed his eyes trying to shift his focus away from Heeseung’s huge cock abusing his most sensitive spots. Away from the ache and pleasure. It just wasn’t working.
“Come on, omega, come like you always do,” Heeseung dropped one of his legs to start jerking him off. “You love coming while I’m still fucking you,” Sunghoon wasn’t conscious enough to notice Heeseung’s ragged breathing, but he was concentrated enough on the feelings from his entrance to tell Heeseung was starting to knot him.
He let go then, because if Heeseung’s knot was starting to grow it meant he was close himself. Heeseung probably didn’t want him to notice, so he pretended like he didn’t know. He let his head roll back and his back arched off of the bed as he came one last time. His moan sounded painful and harsh; his throat hurt but nothing that would last. As much as he wanted to be completely consumed by it, he still had a job and both knew that.
Heeseung continued to fuck him as hard as he could before he couldn’t even move anymore. And if Sunghoon loved how Heeseung’s cock made him feel small, that was nothing compared to how his knot felt. He felt like he was going to die every time Heeseung knotted him. His legs shook and so did his arms, even if he wasn’t entirely sure about that. His arms had been up and tied for long enough that he didn’t feel them anymore, except for the occasional involuntary movement that came from them.
Sunghoon was almost sure he had blanked out for a second, because the next thing he knew, Heeseung had untied his arms and was breathing with difficulty on top of him. They were still connected, and would continue to be so for a couple of minutes. Heeseung always wore a condom, so Sunghoon was left feeling a little incomplete at not having Heeseung’s cum in him. He never said anything, it was just instinct that made him feel that way and it usually didn’t last long. Sometimes it did, but Sunghoon chose to ignore those instances.
He had asked once if they could fuck raw, but Heeseung had refused quite strongly. Sunghoon took the pill after all, more so to regulate his heats than to prevent pregnancies, but it still covered that as well. Yet, Heeseung preferred to be safe than sorry, a pregnancy between them at this point would be quite disastrous.
After a couple of minutes had passed, Sunghoon’s mind getting clear, he noticed that Heeseung’s knot wasn’t going down like it normally would. As much as he loved the feeling while they fucked, he really wanted to take a shower and wash off all the fluids covering his body. The longer they stayed like that, the more he felt like crawling out of his skin. There was also the problem of the others returning and finding them like that; Heeseung may have his own room, but that wouldn’t stop anyone from barging in and he didn’t remember if they had locked the door.
“Hyung, why hasn’t your knot gone down yet?” Sunghoon asked, already feeling uncomfortable with Heeseung between his legs.
“I… I don’t know,” Heeseung admitted, he was freaking out a bit himself.
“Make it go down,” Sunghoon said and Heeseung looked at him like he was stupid.
“It’s not like I can control it,” he complained. “It’ll go down on its own,” or at least that’s how it always was.
“The others will come back and we need to clean all this up,” Sunghoon hurried him, but it didn’t seem to be working.
“I know!” Heeseung sighed, getting mad while his dick was inside the other wasn’t a good idea. “Are you trying to stress me so it’ll go down faster? I don’t think that’s how it works,” Heeseung accused him.
“I’m just pointing out what we have to do,” Sunghoon huffed and hissed when he accidentally tightened around Heeseung.
“That definitely doesn’t help,” Heeseung commented, after moaning at the unexpected sensation.
“Don’t you dare get hard again, my legs are literally about to fall off,” it was a threat and Heeseung knew it. “Come on, take me to the bathroom,” he urged.
“What?” Heeseung almost laughed at the request.
“Well, I can’t fucking walk like this and I can’t stand all this anymore, so take me to the bathroom.” Sunghoon explained and Heeseung realised it hadn’t been a request, it was a demand.
“Do you really think I can carry you all the way to the bathroom while my knot is still inside of you?” If he was honest, Heeseung didn’t think he could or that it was a good idea.
“Yes, get moving,” but Sunghoon insisted, and Heeseung always had problems telling him no.
Sunghoon held tight to Heeseung’s shoulder and braced himself for everything he would be feeling while Heeseung tried to get up while holding him. The short walk to the bathroom was filled with stumbling and hissing from both of them, but somehow, they made it. They got into the bathtub with Sunghoon sitting on top of Heeseung. After some more effort, they got the shower handle and attempted to clean themselves as much as possible. Sunghoon was starting to actually panic as Heeseung’s knot didn’t seem to be getting smaller at all.
“If you relax, I think I can pull out,” Heeseung said with a finger touching his stretched rim. “I think it went down a little,” he added, as if that helped at all.
“Not to stroke your ego, but you are kind of huge, ‘a little’ isn’t going to do much,” Sunghoon couldn’t help his tone.
“Don’t be like that, you’ve taken me enough times that it should work,” Heeseung rolled his eyes. One look from Sunghoon and Heeseung was taking it back. “Fine, we’ll wait a little more, but if it still doesn’t go down, I’m doing it. I don’t think I can get us out of here without killing us.”
“Fine,” Sunghoon conceded. “Why isn’t it going down, though.”
“I don’t know and it’s worrying me a little,” Heeseung admitted. Then he hit his head on the wall, startling Sunghoon, “my rut is close.”
“What? No, it’s not, it should be in…” Sunghoon tried to do the mental maths. “Oh, yeah, it is close,” he realised.
“How did we forget? We never forget,” which was true. They were always extremely careful around their heats or ruts.
They had an arrangement, and part of it stated clearly that they would not spend their cycles together. Was it painful and frustrating? Absolutely, but that was a line they weren’t willing to cross. Their arrangement started off simple, they just wanted to fuck. That’s all it was at first. They even had a no kissing rule they quickly got rid of. They still tried to keep kissing to a minimum while they had sex, but every now and then they liked making out. Sometimes they were too tired to do anything more than just that.
And at first it was just that, sex and the occasional make out session. Then they started getting more experimental while they fucked. And then they started taking advantage of any amount of free time they had, no matter how little time they had. Because of that, they started with random blow jobs in bathrooms and the sporadic hand job. Which at first were all out of the agreement.
The two things they had kept from their original agreement were no heat or rut sex and no marking. It was well known that alphas and omegas that spent these times together or that consistently marked each other tended to get attached. That’s something neither of them wanted.
Sunghoon told himself he didn’t want that. This was good.
Because as much as he loved Heeseung’s dick, he didn’t love Heeseung. Not like that, at least. And Heeseung didn’t love him and that was just perfect for them. This was perfect for them.
Because they weren’t together and they didn’t want to be. Yet, they trusted each other enough to do all these things their bodies wanted, without having to look for someone outside the group. Without the fear of a scandal and having to find the time to meet up. This was better, this was good and this was enough.
Another reason as to why they didn’t spend heats or ruts together was because it would be hard to hide what they were doing from the others. Under no circumstance, could the others find out. They didn’t want to explain what they were doing and they knew the others would approve too much of their decisions. It wasn’t up to them, but Sunghoon didn’t want to have that conversation. He didn’t want to feel judge.
Which meant he had to get Heeseung’s dick out from inside him as soon as possible, or they would be having a hell of a lot to explain.
“Fuck, okay,” Sunghoon muttered, legs asleep and body hurting. “Let’s try this,” Heeseung understood right away, nodding.
“I think it’s even smaller now, so just… relax?” Sunghoon refrained from growling at Heeseung. Instead, he took a couple of deep breaths and tried to relax his body as much as possible. “I’ll lift you up, okay?” Sunghoon nodded, holding onto Heeseung’s shoulders.
Unintentionally, as Heeseung started to lift him, he clawed at Heeseung’s shoulders out of pain and discomfort. It wasn’t extreme, but his eyes started prickling with tears and he had to put all his focus on not tensing up. Damn, how could they forget about Heeseung’s rut? They would have known this would happen and they could have avoided it. While Heeseung’s knot was smaller than before, it still hurt. He held onto Heeseung with more strength and he was sure he was leaving scratch marks all over Heeseung’s back. But he couldn’t care less about it now, Heeseung deserved it for putting him through this.
“I hate you,” Sunghoon murmured, Heeseung kept trying to slowly pull out of him. “Just do it already.”
“I’m being careful, okay, it’ll hurt more otherwise,” he hissed, while it probably didn’t hurt as much for him, it was still uncomfortable.
Finally, Heeseung managed to pull out his knot, and after that it was easier. Heeseung was still incredibly big and it was still a little painful, but Sunghoon was all stretched out from the knot, so it wasn’t that bad. Sunghoon had to calm his breathing after that, Heeseung trying to calm him down and rubbing his lower back gently to soothe the soreness.
“I fucking hate you,” Sunghoon repeated. Heeseung just laughed at him.
“Sure,” he said, “let’s finish washing up and I’ll carry you to your room,” Sunghoon shivered at how gentle Heeseung sounded. It was wrong.
“We have to clean your room,” Sunghoon reminded him.
“Can you even keep standing without help?” Heeseung asked, knowing the answer was most likely no. Sunghoon groaned and threw his head back. He felt a kiss over his throat and immediately flinched away. Heeseung looked as shocked as Sunghoon, “Sorry, I don’t know- must be my rut.”
Sunghoon nodded, choosing to ignore it. If he didn’t think about it, it wouldn’t affect him. As promised, after they were done washing up, Heeseung carried Sunghoon to his room and helped him get dressed. Once Heeseung left him in his bed and walked out of the room, Sunghoon allowed himself to think, just for a second, how he had felt when Heeseung touched him so gently. About the soft kiss over his throat. When his stomach turned into turmoil and his cheeks heated up, he closed his eyes and dismissed all thoughts about that.
If he didn’t think about it, he didn’t feel it.