A/N: The first draft of this nearly made me throw it out but I am so glad I didn't. I tried to write this twice before finally finding the words I wanted. Hopefully you'll be able to enjoy it as much as I do.
Content warning(s): ️
I use AFAB terminology for omega's parts so things like: pussy, clit, folds, cunt, etc.
In my omegaverse things are 100% consensual.
And lastly, I have edited this multiple times but it isn't perfect. There are still mistakes so apologies for that in advance.
"Fuckers," Katsuki muttered. It was much later than he wanted to be heading home, but his friends—though he would never admit that's what they were—had to all say bye to him.
The summer vacation had already started for his class and nearly everyone had already left before him. Leaving Katsuki to pack the rest of his things, most of which were things his friends silently left behind for his nest. They knew better than to bring it up so when Hanta started leaving random blankets or the stupid beenie hats he always wore around, the rest of the Bakusquad followed along.
Denki being another omega usually left the best things behind—while they had very different tastes in nests they could both agree hoodies were the best but blankets were a close second.
Katsuki folded the remaining things into his backpack and pulled on one of the hoodies Eijiro left behind for him. His boyfriend's second most worn Crimson Riot hoodie, the first being already packed delicately in Katsuki's backpack.
As much as Katsuki didn't want to admit it, he was going to miss not being so close to the fuckers. Somehow they had all formed a bond with one another, everyone, but Katsuki referring to their pack as the Bakusquad since their first year; now going into their last year things were not changing and they all still called it that.
Though this time as Katsuki got ready to leave for summer break it seemed to really sink in that he wouldn't see them for a while. He wasn't sure why it bothered him so much since it was only three months and they had all agreed and planned trips over break so likely he would see them in a week.
"Shut the fuck up," Katsuki muttered to his whining inner omega. He was just overthinking because he had to go home and deal with the Hag and all the questions she had for him every time he came back home. It didn't matter if he had already told her over the phone, she needed to know how training was going, if his grades were getting better or worse, if he made any new friends.
None of the questions were that bad to answer until she started mentioning mates and if he had any crushes. Sometimes he really was just too annoyed to tell her about his relationship—that and he just liked to piss her off.
He did not need his mother bothering Eijiro whenever Katsuki did not want to answer her and if Katsuki knew his mother that would most definitely be what she would do. So he kept it to himself since the end of his first year and let them just think Eijiro was his best friend—which was true, but also not his only title to the ash blond.
Katsuki put the hood up taking in the scent of his mate, calming his mind a bit. He knew things would work themselves out and in a few days he would be seeing the dumb-haired alpha and they would go for a hike at Katsuki's favorite place in his hometown just as they planned.
It would be fine.
It probably wouldn't be but he tried to think for a moment that maybe things would work out for him. Then he laughed at the thought.
•─────⋅ 💥 ⋅─────•
When Katsuki got to his house he didn't bother knocking or announcing to his parents that he was there, no, instead he barged into the house as he usually did. It was shocking the door had yet to fall off its hinges at this point.
"Brat, what the hell did I fucking tell you about the damn door?!" Mitsuki yelled. She got up from the table, putting her work on hold as she greeted her only spawn.
"The fuck are you talking about you damn hag?!" Katsuki matched her tone as he kicked his shoes off.
"Watch your fucking language!" Mitsuki really didn't know where her son got it from. Probably someone at school or maybe Masaru even.
Masaru walked out soon after, taking his migraine medication before he entered the room of screaming blonds.
Before Mitsuki could yell—talk to Katsuki she caught a whiff of something different on her son. Usually, he took on a sweet scent similar to her own but with more of a smokie undertone. It was something similar to s'mores by a campfire, however, this time she couldn't quite place it. He still smelled like himself, but there was more to it. Katsuki smelled like he rolled around in autumn leaves or went for one of his camping trips where he spent hours outdoors, with the addition of his own scent.
Mitsuki brushed it off. She knew there was always something different about her son since she didn't see him as much in person since he started living in the dorms. As much as she missed her son it was what was best for him, it was the safest option and Mitsuki knew she wouldn't always be around to protect him no matter how old he got she still felt the need to protect him like she did when he was a baby.
While there was just something different about him this time since the last time she got to see him in person and not over video call she just couldn't place it and it was bothering her. Maybe she should have talked to him sooner and it wouldn't have been such a shock. Sure it had been a while since she had the chance to see him—both her and Masaru's schedules have been a nightmare trying to get one of their biggest projects finished—she had little time to tell the damn brat to visit or equally less time to go visit him at the dorms.
Instead, they mostly talked on the phone or video called once a week or whenever one of them broke and called the other. Most of the calls would just end in one or both of them having to get a new phone, yelling to the point others yelled at them to hang up, or smashing their phones because the two had such similar personalities.
It was a nightmare raising someone with the emotional constipation and anger issues as herself.
When the front door was finally shut behind Katsuki his mother looked him up and down. Katsuki's outfit was baggie as it normally was, the refusal to wear his pants like a normal person was most likely just to piss her off—as most things the brat did were.
Mitsuki did, however, take notice of the hoodie he was wearing, a size too big which again with her spawn it wasn't all that shocking. Though it looked worn and with a hero Mitsuki didn't think her son cared about on the front of it. She let it go, it was probably nothing—she also ignored the mix of scents that cover her son.
Katsuki had long stopped noticing his pack's scents on him. Sure he knew they were always there, mainly because the fuckers always had to be touching him. Denki and Eijiro were the only two who ignored all the signs and at this point had a death wish each time they forced Katsuki into cuddles or scenting him.
It was ridiculous.
Hanta at least kept his distance unless asked, Katsuki didn't know if it was because he was a beta or if it was just because Hanta was just that laid back and that chill of a person. Mina on the other hand was annoying as ever, Eijiro helped out with that though. Once they told her they were dating she gave Katsuki and Eijiro more space, again Katsuki didn't know if it was because she was another alpha or just got the hint to back off a little.
Most might have thought alphas were the possessive ones with their mates but it was rather true for the both of them. Eijiro didn't even know he was an alpha or a prime on top of that until Recovery Girl told him and Katsuki knew at that moment he apparently had a thing for idiots.
However, their pack rarely noticed each other's status/secondary genders and were able to keep an easy friendship with one another—even with Katsuki denying every mention of them being friends.
"You're helping with dinner," Mitsuki informed him.
Cooking was the one thing Katsuki could do with his mom and it did not turn into a screaming match. They both enjoyed cooking and of course—like most things they did—they perfected it. Striving to be the best at everything they did, there was no room to half-ass something.
"Whatever," Katsuki muttered. He set his things by the stairs to deal with unpacking and remaking his nest later.
Without having to be told what to do, Katsuki got to work helping his mom. Masaru was assigned to set the table and get the drinks ready as the two blonds did the rest. He had the cooking skills of Eijiro, and if it wasn't pre-made then there was going to be a fire or something equally problematic happening to the kitchen.
"Why must I always fucking drag everything out," Mitsuki complained. "How was school, you said about friends coming over—the red headed one—next week right?"
It was a nice attempt at conversation, but still hit a nerve. Katsuki wasn't a total dick—despite some of his past and what people said behind his back. However, at the moment he really just wanted to be scented by Eijiro and enjoy the comfort his boyfriend always brought him.
"Kirishima," Katsuki informed her, even if it was weird not just calling him 'Eijiro' or a nickname.
"Right, Kirishima. Does he still have those red crocs?" Mitsuki asked.
It must have been the cooking because before Katsuki could stop himself he was answering his mother and talking to her like they didn't scream at each other every time they had a conversation.
"Red, orange, yellow, pink, black, and purple as well. They just keep fucking getting worse," Katsuki held back a chuckle.
"Is that so, well, maybe he should have his own brand when he's a pro-hero," Mitsuki muttered. She switched places with Katsuki who just finished cutting all the vegetables.
"Yeah, the fucker would love that."
They finished making dinner in silence for the most part, small conversation about what happened since the last time they talked. Both denied it—but they were rather big gossips.
Masaru just watched them from the dining room, enjoying the moment of peace while it lasted. He loved his family dearly, but there was no way he knew how to calm them down like the way food did.
"Your cousin was mated this month, Auntie Inko told me a few days ago. I mean she is so young but then again she had heats like yours so it helped her with that—"
"Why the fuck do I care?!"
And there it was, Masaru knew all it took usually was just one wrong comment and the two would be fighting again. Talking about mates or anything close to it Masaru knew better than to even whisper it in Katsuki's direction—his wife on the other hand always mentioned it.
"Oh shut the fuck up, I know you don't like talking about it!" Mitsuki yelled. "I am just telling you, maybe—"
Katsuki was loudly ignoring her. Fingers in his ears as he screamed that he couldn't hear her and Mitsuki yelling at him with a knife in hand. Masaru rushed over, taking the knife out of her hand and nudging for Katsuki to stop.
"Let's just eat dinner and not talk about that, okay?" Masaru urged.
They both got back to work after that and Masaru was very thankful for that, once dinner was put around the table. Mitsuki was still upset by their fight, she just wanted her son to find someone, she knew his heats were hell and she just hated seeing him in pain like that.
She just wanted to talk to him about it but they always fought when she mentioned anything to him anymore. It was fucking annoying, she was his mother she had a right to still tell him things and expect to be answered, even if it was an 'I don't want to answer that' kind of answer. She just wanted a conversation.
Mitsuki knew she was not a perfect mother, there was no excuse to justify herself. She was terrified when she learned she was going to have Katsuki and she was still terrified though this time she was scared she was going to lose him, to push him away from her.
However, she didn't know how to show affection. Growing up with her parents it was always a difficult thing, so Masaru was the comforting one, the one who had nice words or the one that helped get his son to stop crying. Mitsuki was the loud and brash one, who never seemed to know what to say.
"What's with your scent?" Masaru asked.
Mitsuki never looked up so quickly in her life, looking between the two as she listened carefully for her son's answer. So she wasn't just imagining things, she knew there was something different. Though for Masaru to be the one mentioning it was a bit strange.
Masaru was an omega, but being born prematurely, he seemed to have the smell and scent of a beta. It was nice for someone like Mitsuki whose alpha was more than happy to scent for the both of them once they mated.
"The fuckers all had to hug me before they left," Katsuki muttered.
Though Mitsuki knew there was more to it because if that were true the scent would have faded by now. That was when it clicked for her. The only time her son's scent changed like that was when he was—
"You're in pre-heat," Masaru answered for her.
Katsuki froze. He thought they were just going to comment about Eijiro's scent being all over him, it was nothing out of the ordinary. The alpha rarely even noticed he was scenting Katsuki. However, when he thought about it he quickly realized his father was right.
The thoughts came crashing down on him that he was in fact going into pre-heat, that was why he felt so weird and didn't want to be left alone, he wanted his pack and he wanted—needed his mate. Katsuki then realized it all over again. He was going into heat and his boyfriend was two hours away—and he needed to get out of there.
Katsuki got up quickly, not caring about dinner anymore. He was too worried to know if the claiming bite would help if Eijiro wasn't there to help him. They mated while not in heat and while that would be fine for most, Katsuki and Eijiro were both primes, making most everything much more difficult than what Katsuki was able to read about.
It had been several years since Katsuki had to be hospitalized, due to his heats and he would much rather share a room with Deku than go back to the hospital for such a thing. Heats alone were dangerous and painful for primes, most omega's quite literally taking touch-starved and amplifying it to something that was deadly for them.
Going to U.A. Katsuki thought he would be able to hide it. Recovery Girl and Mr. Aizawa being the only two who knew the truth and rightfully kept it that way until Katsuki stopped giving a shit. Recovery Girl was able to give him the time off along with heavy sleeping pills to get through most of it, but not all of it.
Unless Katsuki was knocked out he was doubled over in pain. It did not take long for the himbo next door to grow concerned and come knocking on his door.
Things after that did improve, turning a week long heat into a few days with his omega purring content that it got what it wanted.
It wasn't until their second year did things start to change. They had started dating early on and Katsuki really didn't think anything changed all that much they still trained together, studied together, the other fuckers joining them from time to time if there was a big exam or assignment.
It was something Katsuki felt like he could get used to so naturally he knew something was going to happen to fuck it up.
They had gone back and forth with the thought of mating and when Eijiro learned it would help with Katsuki's heats he was as persistent as Katsuki was stubborn. However, Katsuki agreed while he wasn't in heat and Eijiro's rut was over.
It had worked for the time being, though now, that he was alone it felt like everything was crashing down around him. The lie he told his parents about Recovery Girl giving him a medication that actually worked, to the thought of him going through each phase of his heat alone, all rushed around in his mind.
It wasn't going to go well.
He knew it wouldn't.
Katsuki locked himself in his room looking frantically through his bag and quickly taking one of his sleeping pills. If he could sleep through enough of it to call Eijiro in the morning it would all be fine.
Mitsuki on the other hand watched the horror on his face as he slowly put the pieces together himself. Of course, he would have forgotten. She was about to say something but he was already getting up from the table and rushing upstairs.
Mitsuki didn't know how to help him. Her comforting scent rarely helped calm him down even when he was a baby. Masaru wasn't all that helpful either at the moment.
Mitsuki sighed and left him alone for a while. Clearly he forgot and was probably embarrassed over it. He hadn't mentioned anything about his heats recently so Mitsuki assumed that Recovery Girl had found a medication that helped her son.
When dinner was finished Masaru cleaned up and Mitsuki walked up to check on Katsuki. Knocking loudly on the door before opening it. Surprisingly it was unlocked.
Katsuki was sitting on the floor, the lights were mostly off except the small twinkling lights that were of course All Might themed from when he was a kid. Katsuki was facing the wall, Mitsuki was unable to see his face but she knew her son well enough to tell he was crying.
His bed was messily piled with all his clothes and some of his classmates. It was clearly rushed and not at all like the perfect nests Mitsuki was used to seeing when he was home.
"Is there anything I can get you?" Mitsuki asked.
"No, just fuck off," Katsuki mumbled with no actual bite.
Mitsuki left it at that, she would check on him again to make sure he was okay but there wasn't anything she could do about it.
•─────⋅ 💥 ⋅─────•
It was two in the morning when Katsuki's heat kicked in. Pain ran through his body and as much as he didn't want to, he couldn't help but whimper. Quickly biting down on the edge of his pillow to stop the pathetic sound.
He wished he was back in the dorms, where he could roll over and be met with red eyes similar to his own, reach out and be fine. Have his alpha there and who was more than content with leaving Katsuki be the pillow omega he was when he was in heat.
Katsuki reached for his phone not caring if he would wake the shitty haired alpha or not. There was no way in hell he was going to the hospital and he knew he wouldn't be able to wait until the morning like he had hoped for.
Just as he reached for his phone on the nightstand it fell and the movement made him double over. Stupid bond only helped enough for him not to pass out. He felt like he had a fever. Something that combined with his quirk was never a good thing, it was something that helped him not have to worry about his quirk going off while he was in pain—until the fever broke at least and he was a ticking time bomb.
"Fuck!"
He fucking hated everything around him.
It was the middle of the night when Mitsuki woke up to her spawn yelling something—that happened a lot, something she unfortunately got used to. Vivid nightmares were another thing they had in common.
Mitsuki got up quickly, throwing on her robe and tying it around her waist as she made her way down the hall to her son's room. Thankfully she left both her's and Katsuki's doors open just in case he needed something in the middle of the night.
She knocked twice on the open door, letting him know she was there without startling him when she heard a pained whimper, she rushed over. Blankets were up to his chin and he looked close to how he did when he got sick as a kid. She sighed as she walked over to the side of his bed checking for a fever, even though she could clearly already tell he had one.
He tried to growl but as soon as he did it felt like someone was stabbing him all over again. He tried to reach for his phone again but it was not even close to being a useful attempt. He was going to fucking scream.
Mitsuki followed his gaze and picked up the phone.
She handed it over to him but he felt like he was going to shake out of his skin. He was so cold yet so hot that he thought for a moment he switched bodies with Icyhot or something and was suffering from some morbid joke.
Mitsuki picked up the phone again making quick work to type in the passcode. It didn't take a genius to learn that it was just his birthday followed by a one because he was going to be number one. Mitsuki rolled her eyes at him that the passcode hadn't changed.
"Fuck off," he whispered.
She ignored his comment and waited for what he wanted his phone for, seeing he wasn't going to answer the silent question she started to ask him.
"What do you want, music?"
He shook his head not wanting to say what he wanted because suddenly him not telling anyone about his relationship was really kicking him in the ass and now didn't seem like the right time to say that he wanted her to call his boyfriend that he might have forgotten to tell her about.
"—to call someone?" Mitsuki questioned as a last ditch effort.
He nodded.
It would be awkward as fuck but it was better than the pain. Katsuki took a breath and tried not to sound totally fucking stupid as he opened his mouth. Talking fucking hurt much less explain anything else so he settled on his boyfriend's nickname and hoped his mother got the fucking hint.
"Ei."
Mitsuki raised a brow, but didn't question it as she clicked contacts going to his favorites. There were only nicknames and the fact her son didn't have anyone's real name in his phone was something she was going to have to talk to him about later.
Shitty Hair ❤️
Tape Face
Eye Bags
Aizawa 🐈 ⬛
Earphone Jack 🎧
Dunce Face ️
Raccoon Eyes 👽
Auntie Inko
Old Man 👓
Hag 📴
Damn Nerd
"Shitty Hair?" she asked, it was the first contact on the list and the only one that had a heart.
Katsuki nodded frantically, his inner omega screaming at him at his mate's name. He fucking hated everything and a little more about the world around him at the moment.
Mitsuki quickly clicked the number knowing if this didn't work she would have to take him to the hospital which was something she would only do if she absolutely needed to. Maybe she could even call U.A. and see if Recovery Girl could do something if this didn't work.
"Kats? What's wrong?" He picked up on the first ring, the voice that answered was tired but slightly panicked most likely from it being so late.
"Kirishima, it's Mitsuki, Katsuki's mom—" She paused, how the hell did she word it so it wasn't awkward as shit.
"Mrs. Bakugo? Is Katsuki okay? Did something happen?!"
She sighed.
Blunt was the only way she could do it.
"No, he apparently is in heat and was trying to call you. I assume you help him through them while at U.A." It was more a statement than a question. "Anyway, I need you to come over as soon as you can, I'm sure you've noticed how painful they are for a prime. I can have Masaru come get you or—"
There was a crash at the other end of the phone and what sounded like running. Whispers that were more like shouts as Kirishima told his moms' he had to go and that he would explain later.
"It's fine I'll take the train and run."
Mitsuki almost laughed at how quickly he was ready to change his plans, under different circumstances she definitely would have.
"All right, see you then. I'm going to put the phone on speaker and set it next to Katsuki. Maybe it will help until you get here."
Katsuki whined. Not really sure what the hell was happening he knew his mother was there talking but he was in too much pain to focus on her words he then paused when he heard Eijiro's voice.
"Kats, hey. I'm going to be there soon okay, it's okay, you're going to be fine."
"Ei, it hurts."
"I know—I'm almost to the train station."
Mitsuki walked out for a moment to get her husband up while Katsuki was able to talk to his friend that she was sure wasn't just a friend anymore. Though there were friends who helped each other with their heats or ruts, she knew damn well how possessive her son was and there was no way it was some friends with benefits situation.
She pushed Masaru out of bed, not bothering to be gentle about it.
"What's wrong?" Masaru looked up from the floor.
"He went into heat, and I need you to help me get supplies, Kirishima apparently helps him with his heats while at U.A. and he tried calling him—"
"The one with red hair and looks like—"
"—he gets dressed in the dark? Yes, that's the one," Mitsuki cut her husband off. "Best friend my ass."
Masaru got up and found his glasses before he forgot to put them on again and tripped down the steps, he had learned his lesson one too many times.
"Anyway, he is on his way in the meantime, I'm going to get some supplies so they don't have to leave the room and you make sure Katsuki doesn't pass out until Kirishima gets here."
Since the moment Katsuki presented, he was always vocal about not wanting a mate. Alpha, beta, or even another omega he didn't want anyone making him 'weak' and getting in the way of becoming the best hero. So much to Mitsuki's surprise that any of this was happening, maybe there was still hope for her stubborn brat.
Mitsuki walked downstairs and got a tray and filled it up with what Katsuki liked and things that were good for heats/ruts. Things that could hold him and Kirishima over instead of having to leave the room. Katsuki always hated leaving his room when he was sick, let alone when he was in a heat.
Protein shakes were lined up on the tray, along with granola bars, protein bars, and a few of the spicy chocolates Katsuki liked were also added to the mix. Mitsuki made sure to keep things with nutrients for such occasions, though she wasn't sure how much they would need for the next few days?
She had no idea how long it would take. Normally it would be two or three days with a mate, but Katsuki wasn't exactly predictable on a good day and his inner omega was much worse. Though she was excited to hear her son's explanation.
If he weren't in so much pain she would have slapped him by now. Not telling her he could have possibly had a mate or that he liked someone. It was just fucking rude even for the brat himself. Mitsuki just hoped he was at least courting Kirishima properly or the other way around.
Mitsuki knew the stereotypes she was raised on weren't always true. After all, she was the one to court Masaru, something her mother hated.
Mitsuki took all the supplies up to Katsuki's room and set them on the desk as she tried not to eavesdrop on her son's conversation. Kirishima doing nearly all the talking, of course, talking about nothing in particular, just letting Katsuki hear his voice.
Masaru switched jobs with his wife and went downstairs to get a case of water and a few gatorades he found as well. He brought them up and sat them by the desk as well for easy excess.
It wasn't all that long that the doorbell rang and Mitsuki quickly ran downstairs to answer it. Kirishima was out of breath from running most of the way there. Without even saying anything she led a very worried Kirishima upstairs.
"As soon as the heat is over I want to know," Mitsuki explained. "Everything is on the desk, call me if he needs anything."
Kirishima nodded sheepishly.
Katsuki nearly jumped out of his bed when he smelled his mate. For once Katsuki was glad his boyfriend was practically always pumping out pheromones. When Masaru opened the door, stepping out and letting Kirishima in Katsuki was growling.
"Don't you dare growl at me, you're the fucking idiot here," Eijiro commented. Knowing damn well Katsuki always told him about his heats a week or two ahead of time, though with exams and leaving for summer break it slipped his mind.
"Fuck you!" Katsuki growled again.
"I am truly flattered, babe."
Mitsuki closed the door after that, very thankful for the soundproof bedrooms they splurged on when buying the house. It was something she was grateful for when she closed her own door, unable to hear anything outside.
Katsuki was on top of Eijiro as soon as the door closed, he knew he would be mortified by the time his heat was over but at the moment his only concern was that his boyfriend was still wearing pants.
He pulled down Eijiro's pajama pants, being grateful that the idiot rarely wore underwear with them. Eijiro tried to slow him down, but the moment he felt his mate's tongue on him he knew he was done for.
Katsuki purred this time when he felt the familiar weight on his tongue, carefully opening his mouth more as he took more of his mate's cock down his throat. Katsuki prided himself on being able to take his boyfriend's cock in his mouth completely.
His eyes watered as he felt Eijiro buck his hips, pushing his cock farther into his mouth. Katsuki was flush with the base, as he looked up. Red eyes met his own as Eijiro tugged on his hair, pulling him off of his cock and letting him breathe.
"Hurts," Katsuki complained. He moved up so that he was sitting on Eijiro's leaking cock, he rocked back as he scented the room.
"You're a fucking asshole," Eijiro commented before he breathed in Katsuki's sweet sent. He knew he would be sent into his rut. It was that easy when it was the blond. The blond who was moaning so pretty for him already as he ground his clothed ass down.
Eijiro gave in to his alpha and without thinking he hardened his hand and tore his boyfriends boxers off throwing them to the ground, as he felt his alpha scream at him to get inside of his mate.
Katsuki, however, was farther gone as he didn't bother waiting, nor did he care as he sank himself down on his thick alpha's cock. Screaming at the stretch all the while his omega purred at the full feeling.
Eijiro nearly lost it as his omega took his cock so well. Katsuki's full pecs bounced as he slammed himself down then up, fucking himself on Eijiro's fat cock.
"Fuck Kats, I want to fuck your tits next," Eijiro hummed, feeling the warmth of Katsuki's pussy tighten around him.
"You'd like that wouldn't you?" Eijiro smirked. "Letting me cover your tits with my cum, let everyone know how well I fucked you, you'll smell like me for days."
Katsuki moaned, his hips stilling as he came at the thought.
Eijiro grabbed his boyfriends hips and flipped them over, taking control as he fucked back into his boyfriend's wet pussy. Katsuki screamed, wrapping his legs around Eijiro as he started muttering.
"Yes! Fucking cum on my tits—I don't care just—" Katsuki moaned as he felt Eijiro fuck him deeper into the mattrress.
One of the things Eijiro liked about Katsuki's heats was the fact his boyfriend was so vocal. Eijiro thrusted into him and was given a new sentence that only went right to his knot.
"Want me to knot you?" Eijiro asked. "Want to see how much of my cum you can hold?"
Katsuki nodded, unable to answer as he was gasping and on the edge of his second orgasm of the night.
"Ah, come on omega. Tell me you want me to knot your needy little pussy and I will," Eijiro hummed as he leaned down and nipped at Katsuki's neck.
"Yes—just—please," Katsuki whined.
"Please what?" Eijiro stilled his hips, only making the blond growl at him.
"Is that how a prime acts?"
"Ei," Katsuki warned.
He tried to move, to get his boyfriend's cock deeper, but Eijiro was not going to move until Katsuki gave in. Part of the problem was that Katsuki couldn't just command him into continuing to fuck him, since they were equally primes.
"Fuck, just move," Katski whined. "Knot my needy little pussy—fuck!"
Eijiro thrust back into him without warning, using him to chase his own release. Skin slapping skin as Katsuki quickly felt like he was pushed onto the edge again.
"Open," Eijiro commented.
Katsuki did as he was told and felt the warmth of his boyfriend's spit in his mouth. Two fingers slid in after stuffing him full as Eijiro's knot locked in place.
Eijiro removed his fingers and moved down to Katsuki's mating bite, making sure his omega had access to his neck as well. Katsuki bit down first as he came with a muffled sob. Eijiro filled him like he said he would as he bit down on the old mark.
Katsuki pulled his boyfriend's full weight on him, being knotted under his alpha was one of his favorite ways to be knotted. He loved having Eijiro's full weight on him, pressing him down as his knot locked them together for the time being.
They stayed like that for a while, content to come down from their highs wrapped in the other's arms, their scents mixing as their bond was claimed again. Katsuki was no longer in pain, his inner omega got what it wanted and was silent for the time being.
"You okay?"
"Hmm," Katsuki let out a purr.
Eijiro lapped over the mark with his tongue. "By the time I'm done with you, you're just going to smell like my cum all the time."
"You can't just fucking say shit," Katsuki whined.
"Why not?" Eijiro pouted.
Instead of answering him Katsuki pressed his lips to his boyfriend's, the aggressive act of affection Eijiro craved. Katsuki ran his fingers through red hair as he let himself get lost in everything that was Eijiro Kirishima.
He was already moving his hips, his boyfriend's knot still stuck in him as he felt him coming again once Eijiro let his fingers rub over his clit.
Round two usually came soon after their highs wore off when both of them got distracted with one another again.
It wasn't long until Katsuki was being pushed against the wall and fuck to the point he didn't care about all the shit his alpha just knocked down as he used Katsuki like a fuck doll.
Eijiro let them both sink to the floor, Katsuki sat on top of him like he was meant to be there. The perfect fit for the ash blond as he took over. Riding his boyfriend as if his life depended on it and until he was screaming as he was filled with cum once more.
They were both messes by then, mixed with each other's cum, hair ruffled and wet with sweat as they found their way back to the bed.
It wasn't until the second day did they actually calm down enough to eat something and were able to have a conversation without getting completely distracted.
Katsuki was round with cum as he rested on Eijiro's chest an arm draped over the himbo's abs while Eijiro let his fingers run through blond hair.
It was early in the morning, still dark out as the All Might lights and a small lamp on Katsuki's desk lit the room.
"We are never going to live this down," Eijiro commented.
"It will be worse than the time Dunce Face walked in on us."
Eijiro's laugh made up for the embarrassment at remembering the time Denki lacked the skill to knock and found Eijiro's tongue buried between sweet wet folds.
"I have no idea how I'm supposed to explain to my mom about this. Momma will just laugh the whole time," Eijiro thought out loud.
"Try your mom having to call her son's boyfriend she didn't know he had," Katsuki added.
"Hey, I'm sorry this was how she found out. I know you wanted to tell her on your own terms."
"Whatever, I'm not complaining now," Katsuki shrugged.
No it wasn't ideal, but there was nothing he could really do about it right now. He just needed to get over his heat and hope his mother wasn't a total bitch about him not telling her about Eijiro.
He let Eijiro hold him as he fell into a dreamless sleep.
•─────⋅ 💥 ⋅─────•
When Katsuki woke up he knew his heat was going to be over soon, Eijiro's rut usually synced up with his mates by now as well.
His head was still spinning, fogged over with his inner omega wanting to be bred thoroughly.
Eijiro pressed kisses against soft skin, rough hands wandering up his naked torso, needing the flesh under him. The feeling of being perfectly taken care of left Katsuki calm and purring with each touch.
He was safe.
It was one of the moments he was able to be soft, to let Eijiro love him and not make a comment about how he was really the hopeless romantic in the relationship but too embarrassed to admit it.
It was a moment in the morning where sunlight streamed in through the window, painting the wall and part of the floor with shades of yellows and orange.
The weight of his boyfriend on him kissing every inch of skin he could. Sharp teeth nibbling at Katsuki's bottom lip taking—claiming him completely and the blond let him. He pulled Eijiro closer, kissed him back, feeling the press of Eijiro's chest to his own.
Katsuki sank further back into his nest, the random clothing, blankets, and obsessive amount of pillows made room for him and Eijiro. Katsuki could hear his steady heart beat, the warm press of Eijiro invading his mouth as Katsuki kissed back. Melting into one another as breathless noises fell over the silent room.
His senses filled with nothing but Eijiro, he was lost in a fogg where his thoughts washed away and left him feeling bliss. Soft mutterings of each other's names were whispered onto their skin, Katsuki could feel the muscles of his boyfriend press into him, strong and gentle as his hands held him, one cupping his chest the other digging into his hip.
It was everything Katsuki craved. His body buzzed at his mate being so close, claiming him, breeding him, loving him. Eijiro was all that Katsuki could smell, feel, taste, think of, it was as if he was Katsuki's drug of choice.
Eijiro pulled back, his hair a mess, long strands of red going up in every direction Katsuki tugged it in. His bright red eyes locked on Katsuki as he looked over his mate's face with such a soft look Katsuki was pretty sure he would have done anything for the lovable idiot.
Katsuki looked equally wrecked, his ash blond hair fluffy and fanned out over the pillow under him. His cheeks were covered in a pink blush, his lips red and shiny.
"You're fucking beautiful," Eijiro muttered lost in his own bliss.
Katsuki knew he was much more soft on their last go. All the events of the last two days caught up to them, a time where they didn't have to rush, where they could enjoy the feeling of being in the other one's space. To press soft kisses over skin, over old scars, to praise the smallest things, to worship each other. Shivers ran over Katsuki, calloused hands dragging their way up his thigh and back to his waist.
It was like being pushed into a different kind of heat. The warmth of Eijiro only increased as he palmed over Katsuki's full pecs, almost needing them gently. Feeling how the firm muscles got squishy while in his heat.
Eijiro lowered himself down, his mouth closing over one of the nipples. Katsuki unwillingly let out a breathless moan when he started to suck. He felt like he was burning and Eijiro was gasoline, only feeding the fire further.
Crimson eyes watching his every move, dangerously sharp teeth that Katsuki fucking loved pinched over his sensitive flesh. Biting down gently, leaving Katsuki choking on nothing, sparks leaving his palms as Eijiro did it again.
"Such a good omega," Eijiro praised.
Katsuki wrapped his arms around him pulling him up, his hands sliding along his boyfriend's broad back. Katsuki pressed a messy kiss to his boyfriend's mouth, earning a gasp from the redhead.
"More, fuck—just more," Katsuki whined when he pulled back.
Eijiro smirked and kissed down his collar bone, both their bodies covered in gentle kisses, littered with bites claiming the other possessively. Katsuki's thighs, hips, tits, and neck were all covered with bruises and bite marks that he would feel for days.
"Eijiro," Katsuki hummed, his voice deep as he dragged out each syllable of his boyfriend's name.
"Fuck," Eijiro ground down. Katsuki could feel the familiar hardness press against his thigh causing him to get wetter. Slick covered Katsuki's thighs as he felt his alpha's erection brush over his wet folds and up to his clit, enough for him to want more but not enough friction to get him off.
Katsuki was panting, the room was too hot, too humid as he tried to breathe again. Both of them were sweaty and lost in the other way too far gone to care about such things. Hushed praise left their mouths.
Eijiro sucked on Katsuki's neck and rutted against his thighs. Katsuki brought his hips up, chasing after the feeling. Eijiro licked over old marks and bites along Katsuki's shoulder, muttering curses that only made Katsuki forget how to breathe regularly.
Eijiro moved, sitting up as he dragged Katsuki's ass closer to him, grinding down into luscious thighs, slick with his omega's juices and his cum from earlier drying on him. Eijiro might not have felt the full force of his rut, but he still felt drunk off Katsuki.
He felt like he was going to lose it as he fucked his boyfriend's thighs.
"Gods, Kats, you feel so damn good and I'm not even in you," Eijiro exclaimed.
Katsuki panted at the feeling of Eijiro's cock brushing over his folds, feeling like he was being used for his boyfriend's pleasure was enough for him to cum. Eijiro hardened his back as small explosions left Katsuki's hands.
"Fuck!" Eijiro blurted out. Katsuki!" he came, covering his boyfriend's pretty thighs with his cum. Before he let himself join Katsuki, falling on top of the blond with a grunt.
"You're heavy," Katsuki muttered.
He was already running his fingers through his boyfriend's hair, clearly not really caring about the weight pressing him into the bed.
"You love it, you love me," Eijiro smiled warmly and fuck if he wasn't right.
Katsuki was in love with this man since he first fucking met the bastard. He had never wanted a mate, never wanted a significant other. It was a fucking weakness for his profession. He knew if he wanted to be number one then he would have to pick. He never thought he would want this, want love, want another person to share his life with.
He never thought he could see his future with anyone. Yet, the shark teeth bitch with the brightest dyed hair Katsuki had ever seen wormed his way into his heart. Befriending him and soon enough claiming him as if it was the easiest thing in the world.
Katsuki knew he wasn't easy to like, yet, Eijiro was there loving him and so much more. Even after telling him about the things he did in middle school Eijiro was rightfully upset with him, but he stayed. Katsuki would not be the person he was without Eijiro and he never wanted to lose him.
"Marry me," Katsuki muttered, not even meaning to say it outloud, but he didn't want to take the words back. "Once we graduate, marry me?"
Eijiro looked up. Hope in his eyes like a puppy given a treat, he had a smile that was brighter than the sun shining into the room. Katsuki wanted the man in any way he would allow; he wanted to be the only one who got to see this side of Eijiro.
Bright eyed, the smile he deemed 'too ugly' because of his teeth showing, the goofy raise of his eyebrows as he nodded his head.
"Fuck, yes, yes," he kissed over Katsuki's face until finally pressing a simple kiss to his lips. "You are everything I could have wished for."
Katsuki squeezed his eyes closed, not trusting himself at the serious tone his boyfriend had.
Eijiro kissed him once more, this time when he pulled back Katsuki opened his eyes, unable to explain at the moment just how much Eijiro meant to him, he knew that the redhead noticed all the things Katsuki did for him to show his love. Eijiro knew Katsuki wasn't good with words, he showed his love in actions.
Mornings he brought him breakfast, made him food while he screamed at the extras to fuck off, played with Eijiro's hair while at movie night because Eijiro mentioned how much he liked it once, the times he took him out on dates to places Eijiro mentioned as he rambled about things he didn't think the blond was listening to him.
Katsuki paid attention to him, helped him through times he thought he was over dealing with, and helped him on days where getting out of bed felt like too much.
They both had their own problems; the other knew they couldn't just get rid of them, but they could help. Have a shoulder to lean on when life pushed them too hard, have warm arms to wrap around them after a nightmare. They were equals with everything they did, they pushed the other to do better, to reach out when they needed to.
"You have one more knot for me?" Katsuki asked as an invitation.
"Always for you," Eijiro purred.
Eijiro shuffled off of him only to nearly fall off the bed completely, fumbling with the sheets as he sat back.
"You're an idiot," Katsuki laughed.
Eijiro couldn't help but laugh with his boyfriend, the soft sound music to his ears.
"I'm your idiot."
"Fuck yeah you are!" Katsuki agreed.
Eijiro got back to what he was going to do. He started licking down his boyfriend's stomach, as he pushed his fingers into his used hole. The amount of slick always amazed him. It was shocking how wet he could get his boyfriend or how much cum he was able to hold before it started to run out of his pretty pussy and down his thighs.
"Want you in me, fuck," Katsuki demanded.
Eijiro removed his fingers from his boyfriends cunt and shoved them deep into the blonds mouth.
"Suck."
Katsuki did, tasting a mix of himself and Eijiro invade his mouth.
"Good boy," Eijiro praised.
Eijiro moved so he was nearly laying on him again. This time pushing Katsuki's thighs open and lifting them to rest on his strong shoulders. Katsuki was by now stretched out enough for it not to hurt, but the action still left him embarrassed, even after two days of fucking in just about any position that let them chase their releases.
Eijiro pressed into him, a shaky breath ghosting over his neck as if this was the first time he felt the warmth engulf his dick, suck him in as if he was meant to always be in his boyfriend's hole.
Katsuki gasped at the fullness. The sensation was all encompassing each time, the feeling Katsuki got, the rush of adrenaline when he was stuffed with his mate's fat cock always left him trembling. Knowing he belonged to the redhead and that Eijiro belonged to him.
Katsuki cried out as his boyfriend bottomed out inside him. Katsuki wrapped his arms around his neck as he moaned happily.
"You feel so good," Eijiro gasped.
He let more of his weight push down on Katsuki as he shifted enough to cup the blond's face. He rocked his hips gently fucking into him. The movement only made the blond feel like his whole body was throbbing. The feeling of his boyfriend seated so deep inside of him was all consuming.
"Fucking, move," Katsuki muttered. He clenched his thighs together, shifting to have them around Eijiro's waist as his boyfriend did as he was told. His thick cock slid out of him and soon enough it pressed back into him.
Eijiro's own grunts and moans mixing with Katsuki's.
Tossing his head back into the mass of pillows on his bed as he felt the wonderful feeling, the heat building up for one last knot, knowing how well his alpha took care of him. Katsuki could only gasp as Eijiro thrusted deep into him, tears running down his cheeks as Eijiro whispered praise into his skin, kissing along the tear-stained cheeks. Sparks flew from Katsuki's hands, resting them on hardened shoulders.
Katsuki felt like he was hit with Denki's quirk, the feeling of electricity along his body as Eijiro's cock hit the right spot. Filling him with euphoria of the meare sound of skin slapping skin as he fucked into him harder, quicker.
"You—Fuck—You're still so fucking tight, I love being inside you, fuck, you feel so good, Kats," Eijiro blurted out.
Katsuki craved the praise and let the sensation of the heat that was building up quickly overwhelm him. He cried out, clenching down on the dick inside him as Eijiro bit into him again. The claiming mark was bitten raw as the pain mixed with his pleasure of the orgasm that washed over him; he didn't care, he felt too good.
"AHHH!" Katsuki screamed. "Fuck."
The room around him was lost in static as Eijiro thrusted his knot into him. Katsuki squeezing greedily around it, his body ready to take the warm load his alpha pumped into him. His cock twitched in him, filling him to the brim, his knot locking it inside. Katsuki felt the familiar warmth in him as Eijiro rocked his hips, fucking his cum even deeper inside him.
Eijiro left kisses along his boyfriend's face until their mouths slotted together as they both were able to think again without their heat or rut clouding their thoughts. Leaving them to rest in the warmth and mess of the other. The afterglow engulfing them both in the morning sun as they slowly road out their highs.
Once his knot went down Katsuki whined when he slipped out of his pussy. The rush of cum slipping out between his legs. Katsuki glared, but Eijiro only leaned down and kissed his hip in response.
"We should shower and you can fix your nest before we pass out," Eijiro muttered. "Not to mention we should drink and eat something."
Katsuki nodded, knowing he was right, but still not wanting to get up. So Eijiro helped his mate up and grabbed a protein bar along with water and made sure Katsuki ate and drank something before doing the same for himself.
Eijiro got up again, his naked form was something Katsuki could stare at for eons. He offered out his hand to Katsuki, he took it grasping onto the calloused hand that felt as familiar as his own. Eijiro lifted him up and took him over to the connected bathroom to clean up.
Katsuki was pliant and careless as he stood in the shower, his alpha washing him gently and thoroughly. Pressing kisses into aching muscles. Massaging shampoo and conditioner into his hair before cleaning himself off, letting Katsuki have the warm water on him for the whole shower.
He rinsed them both off before towel drying them both off and carrying Katsuki back to his room. He helped Katsuki with his nest once he was given permission to do so. They put all the things that needed to be washed onto a pile on the floor to deal with later.
Katsuki made his bed with fresh sheets and clean bedding. Adding in anything he could that was still somehow not covered in cum or slick to the bed. Pillows were situated perfectly and to his liking before he let himself slide into the soft covers.
He stretched out his hand to his alpha, inviting him into his new nest to which Eijiro happily cuddled into his omega. Both purring at the softness of the moment. The moment where time wasn't real, they didn't have to talk or explain anything to anyone.
They were able to just enjoy each other. Eijiro cupped his boyfriend's cheek as he pressed chaste kisses to the others' lips. Katsuki closed his eyes in contentment. He was fully at peace as he nodded off wrapped in Eijiro's arms. It was a much needed nap before he went downstairs to deal with his parents. His mother was going to be relentless with the questions.
•─────⋅ 💥 ⋅─────•
Eijiro was still wrapped around him when he woke up. Resting his head on Katsuki's pecs as he not so gracefully snord into them. It was now closer into the afternoon as they both slowly woke up.
Their limbs aching with a satisfying burn left behind. Katsuki kissed Eijiro's forehead to wake him, gently and sweetly, something he rarely did unless he was still left on a buzz of the aftermath of his heat.
Eijiro leaned up and Katsuki met him half way in a kiss.
They lazily got up and showered once more, then got dressed in fresh clothes, Katsuki having enough of Eijiro's clothes with him for the redhead not to have to wear his old pajamas that he showed up in.
Eijiro called his moms' first, letting them know he was okay and briefly explaining why he rushed out so quickly. Though Katsuki was the one who had to press the call button for him, the awkwardness of having to explain why he left so suddenly must have just kicked in.
"Eijiro, honey, you all right?" His momma asked, picking up the phone on the first ring.
Eijiro panicked and didn't say anything so Katsuki sighed loudly and took his boyfriend's phone, putting it on speaker.
"Hi, Mrs. Kirishima." Katsuki flipped his boyfriend off. "Eijiro, is fine, but is apparently too embarrassed to explain—"
Katsuki didn't want to explain to his future mother-in-law that her son just got done having marathon sex with him, but her son was also just frozen there blushing like an idiot and clearly not going to say it. So much like Katsuki's own mother he went with the bluntest explanation possible.
"I forgot about my heat and since I'm a prime I need my mates help through it," Katsuki explained.
"We assumed it was something like that when he burst into our room saying: 'heat, I have to go—explain later!'" Eijiro's momma explained shamelessly. "Glad you're both doing alright. I assume you'll let me know when he's coming back—you are more than welcome to join him."
"Yeah, I just have to explain—a lot to my parents yet, thank you though for the offer."
Finally Eijiro seemed to come back to himself as he talked with his parents, Katsuki chiming in when necessary until they finally had to face the inevitable and go down stairs.
Eijiro hung up after saying his goodbyes to his family as Katsuki nervously stared down his door.
"We can do this," Eijiro muttered.
Katsuki wanted to laugh, Eijiro had only ever met Mitsuki as his friend, he had never met her as the boyfriend, the mate, the fiancé. It was going to be a nightmare.
Eijiro grabbed Katsuki's hand, not daring to let go as they both made their way out of his room and down the stairs.
Mitsuki and Masaru were in the kitchen, Mitsuki cooking something for lunch while telling her husband what she needed since he was not all that helpful in the kitchen.
"Well good afternoon," Mitsuki greeted them, not even turning to face them.
"Fuck off," Katsuki grumbled and Eijiro squeezed his hand.
"Be nice," Eijiro whispered, but Mitsuki heard him anyway.
She didn't even try to hide her smile when she turned to face them. Clearly looking them over for their claiming marks. Visible on both their necks—along with a mix of hickeys.
"You can at least stop looking so happy over it," Katsuki grumbled, dragging his fiancé over to the dining room table.
Mitsuki and Masaru joined them, of course, Mitsuki was going to have fun with this information.
"I will not. You have bitched to me since you left my va—"
"NO!" Katsuki cut her off.
"Oh hush, you bitched about not wanting a mate and then here we are with an alpha?" Mitsuki looked to Eijiro for clarification. From the scent of him he smelled like a powerful one at that.
"He's an alpha prime," Katsuki answered for him, not even trying to hide the pride in his voice for finding such a good mate.
"Oh shit," Mitsuki muttered. "This is even better!"
Masaru, the much calmer one at the table, smiled at the couple. "So this is a serious relationship and not some arrangement for friends?"
"He is my fucking fiancé!" Katsuki yelled before he could think better of it.
Eijiro scratched the back of his neck with his free hand, the other being squeezed to death by his fiancé who lacked a filter.
"Well, it's a new title—but yes, it is a serious thing," Eijiro answered.
"I need to know everything, since apparently my brat won't tell me," Mitsuki looked at Katsuki for the last part. "How about you tell me over lunch, you two must have worked up an appetite.
"Mom!"
"What you don't think I've never gone through that, you're bitch ass is proof I've had se—"
"MOM!"
"FINE!" Mitsuki screamed back.
Mitsuki quickly made them something for lunch and handed over a familiar looking pill to her son.
"Unless you want to give me news I'm going to be a grandma, take the fucking pill."
Katsuki nearly bit her, however, Eijiro took the pill from Mitsuki and pressed it to the angry blond's mouth.
"Stop being stubborn."
Katsuki opened his mouth and took the morning after pill with no problem after that. He did not need brats of his own to deal with at the moment after all. Especially if they took more after him, he would be done for.
Once they were all sat down, all eyes were on them. Eijiro started to talk, telling them how they got together in their second year, and how until they spent their first heat and rut together—did Eijiro find out he was also a prime hence why he helped settle Katsuki's heat so well.
He told them about the cute things Katsuki did for him, Mitsuki and Masaru staring in awe at the person who brought out the best in their son.
Mitsuki was going to give Eijiro the shovel talk once he came downstairs but now she was sure she wouldn't need to. There was no way her son was letting the man at his side go—nor was Eijiro going to let go of her son. They were completely lost in each other much like how she was with her husband when they first got together.
"I am so happy for the both of you, Eijiro, why don't you call your moms' and see if they want to join us for dinner. We do have an engagement to celebrate after all," Mitsuki beamed.
Katsuki knew it was going to be a long summer break, but at least he wasn't going to be spending it alone. He had his alpha by his side. Eijiro seemed to be ready for the chaos that was about to happen.