Chapter 11 - I Have Always Wanted Kacchan

He had to be more patient with Zuku. Katsuki snorted because he'd already made the shift in his own brain from calling Izuku "Deku". It wasn't the little nerd's fault that his hormones were unbalanced and out of control. Katsuki couldn't believe he'd slipped up and hinted to Zuku that he didn't like his scent.

Since the fact was that Katsuki could drown in it, die, and be happy to do it.

He remembered that Zuku had a pleasant scent as a child. They'd scented each other with their weak, pre-presentation scents. Zuku always smelled like summer and flowers. One reason why Katsuki secretly loved flowers, especially sunflowers. They reminded him of Zuku - and not just the smell. They seemed the personification of sunshine and happiness, which was just two of the million traits Zuku had that Katsuki loved.

Now, strengthened by adolescence and augmented by his impending heat, the heavy perfume of sunflower and jasmine permeated the common room. Katsuki chuckled at the thought of his returning classmates, because even opening the windows wouldn't air out the room enough where they wouldn't smell Zuku.

Then he frowned, because he didn't want his fellow alphas to know how sweet his omega smelled.

All that aside, he'd better watch his mouth. Seeing those big, green eyes fill with tears made him feel like total shit. Way to make your omega feel worthless. Fuck, he was the biggest idiot on the planet.

Strike that, the universe.

Yet, Zuku had let Katsuki scent him. He was surprised, but he probably shouldn't have been. Zuku probably would have refused the other alphas – froggy or icy hot or ponytail – if they were the ones taking care of him. But Katsuki and Izuku had a history together and had scented each other before. Sure, they were just dumb, little brats, but it wasn't a new thing for them.

It was, however, a new sensation. The jolt of electricity that shot through his body as their inner wrists gently rubbed back and forth made him think he'd accidentally scented Kaminari. Was this what adolescence did? No wonder his parents liked to scent each other. Then, before the disaster of burning his breakfast happened, he had the thought that if it felt like this with a simple wrist scenting, just imagine how it would feel if Zuku nuzzled him on his neck gland.

Though he hated losing his breakfast, or having to start over and make a smaller amount for himself so as not to use up too much of their food stash, he was glad for the distraction, because he wasn't sure if he would have been able to hold back. Which then led him to wonder if being Izuku's alpha during the heat was the best idea.

At least the omega had eaten almost all of his breakfast. Katsuki had to finish it, but Zuku put in a good effort. He ignored Zuku's protests, because the boy did need the carbs and protein. He was well aware that the dummy rarely ate anything for breakfast (if they got together, Katsuki had plans on changing the dipshit's whole diet into something a hell of a lot healthier), so he was happy Zuku ate what he did.

Katsuki was then able to herd him back to his room, when all Izuku wanted was to hang out and watch TV. TV! With a fucking heat pending! Fucking hell, this was going to be the longest fucking four days of his life. When Katsuki put his foot down, out came the crocodile tears, the trembling lip, and the hurt expression. Manipulative little shit. Katsuki knew that Izuku knew exactly what he was doing, but there was no way he was going to disobey the rules set down by the school staff and teachers.

So, off went a pouting Izuku to his room, followed by Katsuki to make sure he actually went in there.

They had cut it close, though. Too close for Katsuki's comfort. It was hard to describe, but by the time they got to his floor, Izuku's movements were almost liquid. Katsuki might compare it to watching someone who was wasted drunk try to walk a straight line. Izuku was laughing, but it was a breathy, wheezy sort of laugh that shot down to Katsuki's dick. Fuck.

Izuku couldn't coordinate sticking his key in the keyhole, so Katsuki took the key from him. He made a mental note to secure the newly installed locks when he left the room. Izuku had fretted about the new lock system when he first saw it, looking at the locks and the bars on his window with a resigned and sad expression. Katsuki could tell it embarrassed him, too, to have his room stand out in a way that singled him out as the one different from all his classmates.

It wasn't exactly easy to unlock the door, because Izuku had suddenly become clingy, hanging on to Katsuki's arm as he struggled with the lock. "Zuku, I need to open the door."

"Alphaaaaaaa," Izuku whined.

"Omegaaaaaa," Katsuki copied his tone, getting a pout from said omega. "There, get inside. I think we made it in time."

They stumbled into the room, because Izuku jumped up and folded Katsuki in a koala hold. The damn shit's feet weren't even on the floor, and Katsuki nearly fell over from the overbalance of Zuku's weight. Thankfully, he steadied himself, bracing his feet apart so he didn't fall over. Fuck, if he had fallen into the nest? Yeah, he'd never get out.

Especially since Izuku was trying to nose against the scent gland on his neck, causing his thoughts from earlier to bubble to the surface.

"No, no," he admonished, but gently, in a little rumble. "Not yet, Zuku."

"Kacchan," Izuku made a little cry of his name, a cry that made Katsuki fight against the desire to bury them both in the nest. "Kacchan, I want to scent you."

"Later, okay? Right now I have to get you in your nest."

"Kacchan and me in my nest? Okay!"

"No, Zuku in his nest."

"Don't you like my nest?"

"It's a perfect nest. For a perfect omega," Katsuki assured him, getting a pleased hum from Izuku. "And this perfect omega should go in his perfect nest."

"I want Kacchan with me."

"I can't yet, Zuku. Maybe someday."

"Today!"

"If Aizawa says it's okay, I will," he hedged, knowing full well that Aizawa would say a big ' hell no '.

"I'll text him."

"You do that. Meanwhile, you should get into more comfortable clothes," Katsuki said, trying to pry Izuku's arms from around him. "I brought over one of my tees for you to wear."

He somehow manhandled Izuku out of his arms and onto the floor, but the boy was swaying and looking at Katsuki as if he was something to devour. Shit, he needed to get out of the room fast. Izuku was purring, but it was a different tone from the ones he'd purred before. Deeper, throatier, and so damn sexy that Katsuki was having trouble focusing. "Thanks, alpha," Izuku said as he took the t-shirt Katsuki handed him. His voice thrummed in a timbre that Katsuki had never heard.

"Do you want me to scent your nest? I'll have to touch it."

"You can go in it if you want."

"I won't do that, Zuku. I'll never leave."

"I don't want you to."

Fuck fuck fuck. Okay, distraction. He turned to run his wrists over the edges of the nest, trying not to disturb the present alpha scents from their classmates, though he had to fight to suppress the urge to growl when they wafted up to his nostrils. Katsuki concentrated on the pillows and area where Izuku's head would likely be, smiling to himself to see that all the articles of clothing and the blanket he'd scented and loaned to Izuku were there. He spent a lot of time overloading his scent in that spot. He wanted Izuku to smell him all through the throes of his heat wave.

"Alphaaaaaa," the whine sounded again and Katsuki turned, nearly choking to death at the sight before him.

Izuku was naked. Holy fucking shit naked. Staring at Katsuki with a look in his eyes that made his inner alpha howl. Holy fucking shit - Katsuki really did not want to leave now. His omega was fucking built . How was he supposed to walk out that door? "Zuku! Put the shirt on at least!"

"Don't you like me, alpha?" Izuku asked, those damn tears reappearing.

"Too much. I…fucking hell, Zuku, I can't…"

Izuku approached him, deliberately stepping one foot in front of the other. Where was his fucking drunk walk now, dammit? Katsuki stepped back, but only bumped into the side of the nesting bed. "Kacchan," and his fucking purr was louder than ever and drowning out whatever few working brain cells Katsuki had left in his head. "Come into my nest and fuck me."

He choked again. Sweet, little Izuku Midoriya was saying this? To him? His dream? No, this couldn't happen. Aizawa would fucking kill him. Then resurrect him somehow to let All Might kill him. Then resurrect him again to let Aunty Inko go for it. He did not need this.

"You don't know how much I want to, omega," Katsuki gasped out. "I just…I can't. Unless Aizawa says it's okay," he added hastily when he saw the hurt look in Izuku's eyes. "Text him and see what he says."

It worked. Thank all the gods above that it worked. Izuku backed away and somehow Katsuki wrestled the t-shirt over his head, getting loud whines and complaints from the omega, who tried to back away and squirm out of reach. "Kacchan, I need my phone!"

"Put this on first," he insisted. Dammit, Izuku was worse than a toddler was and this was just the beginning of the heat. Katsuki was going to have a rough time with this feisty one. At least the t-shirt was now on, and since it was one of Katsuki's shirts, it calmed Izuku down enough with his scent where the omega stopped whining. Add the benefit that it fell to Izuku's mid-thigh so at least everything was covered, and Katsuki hoped it would stay that way.

He didn't get a good look at Izuku, but, yeah. He really wanted some of that.

Or all of it.

Shaking his head, he worked on implanting his scent in the nest, listening to the little hums behind him as Izuku texted their teacher.

"Are you good, Zuku? I should probably get the cuffs on you and leave." Even Katsuki could hear the reluctance in his voice. That wasn't good, because Izuku was smart enough to pick up on it.

The omega did. "You don't want to, Kacchan," Izuku said, his voice low and throaty. That was a new thing.

"I don't, but I have to. You didn't agree to anything beyond my taking care of you. Not mating."

"You don't have to bite me and claim me. Just fuck me."

Holy what the fuck? If this was a preview of what heats would be like with Izuku, Katsuki could not wait until next year. He desperately tried to think of response. "What did Aizawa say?"

Izuku frowned, but let it clear quickly. "He said sure! Kacchan can do whatever he wants to me!"

Katsuki tilted his head, raising an eyebrow. Izuku said that in too chipper of a voice. He held out his hand. "Let me see the text."

"Nooooo," Izuku whined, pressing the phone firmly against his own chest. "He did say it, Kacchan, I swear!"

"Show me," Katsuki insisted.

They stared at each other, neither backing down, but Izuku started to squirm. Likely because he was disobeying an alpha, and while Katsuki didn't hold on to those old-fashioned beliefs that the omega should always submit to the alpha, it was coming in handy at the moment. "Fine," Izuku finally huffed, slapping the phone onto Katsuki's waiting palm.

Aizawa Sensei: ABSOLUTELY NOT

"This doesn't look like he said I could do whatever I want," Katsuki said wryly. He set the phone on the side table and plugged it into the cord Izuku left there to charge. He grabbed one of the cuffs, frowning down at it. "Come here, Zuku."

Thankfully, Izuku listened. They were silent as Katsuki slid the cuffs on. He marveled at the design. They weren't clunky or bulky. They shouldn't impede Zuku in any way. Katsuki made a mental note to check Izuku's wrists when he came in to take care of the omega to make sure his skin hadn't chafed. Despite entering into his heat wave, Zuku was docile and quiet, merely letting out a small whine as Katsuki locked the second cuff.

"This sucks," the omega declared.

Katsuki grunted in agreement. "Into your perfect nest, omega."

Grumbling and mumbling to himself, Izuku crawled over the edge and into the well he had created. It was shaped almost like a kiddie pool; Izuku fashioned the sides to be higher than the top of the bed, and it looked as cozy as it could be. Blankets and pillows made up most of the structure, but Izuku had arranged the borrowed articles from everyone into the nooks and crannies created by the blankets. It was a mishmash of colors and textures, but the omega seemed pleased with it.

Izuku sat in the middle, looking around at it, then busied himself with moving a few things – he switched Kaminari's shirt with Jiro's pillowcase – things such as that. Katsuki watched him, a fond look in his eyes as Izuku made everything perfect.

"You good?"

"No. I want my alpha with me."

"I want to be with you," he said, unwillingly thrilled at the possessive 'my' Izuku used. "Maybe next time, if you want me still."

Then, completely flooring him, Izuku rolled into a ball, burying his face in a flannel of Katsuki's. "I have always wanted Kacchan," he said in a woozy voice.

"I-I'll check on you soon," Katsuki sputtered, backing away a few steps. "Text me when you, uh, come down from your first wave, okay?"

Izuku growled. He fucking growled, fumbling under one of the blankets and fishing out a knotted dildo. Katsuki gulped. "Kacchan!" Izuku whined.

It was cried to empty air as Katsuki had practically run from the room, his heart racing and his dick hard.

Yes, he thought as he locked the five locks on the door. This was going to be a long four days.

It wasn't a long four days. It was a long six days. When the fourth day passed with no end in sight, Aizawa called Recovery Girl to come and check on Izuku. Katsuki silently let her in, eyeing her with suspicion. She was another alpha entering the den of his omega. He knew in his brain that she was there to help, but he couldn't suppress his alpha instincts. Even Aizawa never came into Izuku's room, though it was bad enough that the alpha was next door in Aoyama's room.

A low growl rumbled in his chest as she looked Izuku over. The omega lay, passed out with exhaustion and looked small and vulnerable with a flushed and sweat-damp face, making Katsuki's heart melt.

"Hmm," Recovery Girl hummed, brushing Izuku's curls off his forehead.

"What?" Katsuki demanded around his low growl.

"Nothing to worry about, young Bakugo," she said, extending her lips to kiss the exposed forehead. All of Katsuki's hackles raised and he fought against attacking her. She looked at him nonplussed. "I think because he's suppressed his heats too many times, this one might be longer."

Despite not knowing much about biology or anatomy, Katsuki could see how that made sense. Still, it broke his heart to see Izuku going through this. The last four days had been rough on both of them, and Aizawa was more of a basket case than he usually was.

Thankfully, Izuku had only a few heat waves a day. The rest of the time, he slept. At least when he wasn't bathing or eating. Katsuki lived for those rest periods, which usually lasted a few hours. He could catch his own nap, his phone next to his head to wake him if Izuku texted. If he wasn't catching up on sleep, he was cooking food in preparation for Izuku's next meal. Cooking it ahead of time meant he had more time to take care of Izuku in person.

Those were the hardest moments. He didn't know what Izuku did during the wave, but he knew from reading about it (and discreet questions to Aizawa that resulted in way too much omega detail from his alpha teacher) that Izuku was intensely horny during it. He had to masturbate with his hands or his toys, bringing himself to orgasm after orgasm in order to satisfy a need that couldn't be satisfied. Toys and hands were a poor substitute for an alpha knot, but if you weren't having a sexual heat, it was the best you could do.

All Katsuki knew was that when he got the text from Izuku ( 'I'm ok Kacchan' , usually) he would quickly toss in the pre made meal for the day into the oven, and then bolt upstairs. He unlocked the five locks and entered the den of his omega. The smell was nearly enough to send him into a rut. The scent of slick and oversexed pheromones hung heavy in the air, making the room feel almost sauna-like, though the temperature was somewhat cool. Like a damp and humid spring morning, hovering between a winter chill and a summer haze.

Izuku would be curled up into a ball in his nest, usually naked and covered in slick and cum. That was the most difficult part for Katsuki – seeing Izuku like that and not being the one to cause it. He knew Izuku was embarrassed during these moments of half-lucidity, though he didn't think the omega would remember much once the heat had passed. He'd read they often didn't when not accompanied by an alpha in a sexual way.

Katsuki did the clean up part as efficiently and emotionless as he could. First task was to draw a bath for his omega, putting in soothing oils for sore muscles and soothing scents to keep him calm. Then came the worst/best part – picking Izuku up to carry him to the bathroom. It wasn't carrying him that was difficult; it was carrying him, smelling as enticing as he did. Worse if Izuku was naked. Katsuki wanted nothing more than to bite Izuku and mark him. Claim him. Take him back to that nest and go true alpha with him.

That would not move him closer to his goal. So, as difficult as it was, he held back.

Once Izuku was in the bath, Katsuki returned to the room to strip the nest. Omegas usually kept four or five sheet sets handy, and by doing laundry daily, Katsuki always had a fresh set to replace the soiled ones. And soiled they were. He was grateful for the moisture-resistant pads used under the sheets. He'd inspect the rest of the nest, removing any blankets or alpha articles arranged there. Izuku didn't like it, but he always had something to replace ones that had become slick-or-cum-soaked. The other alphas in their class were generous with their things, happily taking their freshly washed items back and providing newly scented ones for Izuku.

These new items and blankets Katsuki would leave neatly on the bed for Izuku to place once he got out of the bath.

Then a quick dash down to the kitchen to grab the hot meal, and back up to the room. The next best/worst part of the routine was next. Getting a wet, naked Izuku out of the bath, dried off, and dressed in comfortable clothes. The omega was usually so exhausted that Katsuki had to perform most of these things for Izuku. Drying and dressing Izuku a few times a day was slowly killing him.

It was worth it, though, after making sure the omega ate, to see him crawl back into his nest, purring and humming in a way that made Katsuki's heart stutter. Katsuki would watch him with a fond smile as Izuku arranged the new items, sniffing at each one before meticulously placing them where he wanted. Katsuki's items were always on his pillows and tucked in among the blankets near his head.

If Katsuki gave him a lot more items of clothing to use than the other alphas, it was for him to know and no one else to find out.

Little chirps as Izuku fell into a doze were his favorite. He loved that sound, so content and happy. Omegas chirped only when they felt safe and loved, something that gave Katsuki hope for them and their future. He didn't want to jinx it yet, but he took it as a good sign that it sounded as if Izuku felt loved.

Once Izuku was asleep, Katsuki made sure to check on him, moving closer to the bed, but not daring to touch him. Omegas were sensitive about their nests, and other than scenting it for Izuku, Katsuki didn't want to push his luck with reaching into it, even with Izuku asleep. Somehow, though it wasn't really possible, he didn't want Izuku to know he did.

And though he ached to run his fingers through that messy tangle of slightly damp, green curls, he knew better. He was happy enough that Izuku insisted that Katsuki scent him before he crawled into his nest.

Only then did Katsuki leave, locking the locks and trudging back to his room, unless he had a load of laundry to do for Izuku. It was a relief to fall into his own lonely and cold bed, clutch his extra pillow to his chest, and fall into a fitful sleep, on alert for any texts from his omega.

Katsuki was genuinely surprised at all the support from his fellow classmates. The other alphas brought his classwork to him – usually Kirishima. Many offered to help with meals and laundry as well. To help take some of the burden off him. At first, he refused, but then Tsu talked to him, reminding him they were all teammates and that they all cared about Izuku and, to his surprise again, cared about him. He scoffed and grumbled of course, but the feeling that stole into his heart felt welcome. He often didn't think his classmates gave two shits about him.

Not that he asked much of them. He still felt it his responsibility to his omega (and he should really stop thinking of Izuku as his until they decided on something official – he should at least ask Izuku first if he would accept Katsuki courting him) to be the one to take care of everything. But, the reality of the situation didn't allow that. Katsuki was a young alpha. Though he had the energy and stamina, he was also a hero in training, had schoolwork, and this was his first time taking care of an omega. Tsu pointed all this out, so he grudgingly allowed some of his friends (ugh, fucking weird to think that) to help.

It helped, too, that they spent time with him. It was normal for Mina, Kirishima, Denki, Jiro, and Sero to hang out with him, but the others began to more as well. It took a couple of days for him to notice, but when he did, he didn't know whether to be annoyed or amused. Zuku's closest friends, especially, liked to sit with him doing homework or cook with him in the kitchen. He chose the amused route, because he could see most of it was over concern for Izuku. While it annoyed him that Izuku was the focus of many of these alphas, he realized that aside from concern over Izuku, he was also the only one of his peers to take care of an omega.

They all had questions.

He understood, but there was a lot that he couldn't or wouldn't tell them. Katsuki had to give vague answers, because he knew Zuku would be mortified if his classmates found out how he begged for Kacchan over text, or the state of his nest when Katsuki went in to take care of him, or how he broke one of his sex aids from overuse. Katsuki would be the biggest idiot on the planet if he told anyone any of these personal things. He knew it would be bad enough when Izuku found out everything Katsuki had to see or hear during the heat.

Vague answers, thankfully, were good enough. He simply stated the things he did – fed, cleaned, and scented Izuku. He could tell most of them knew there was more, but they didn't press him on the issue, and let Izuku have his privacy.

Anyway, the steady presence of Kirishima as they studied, the goofiness of Denki that made him smile as he caught a few minutes to lounge on the couches, the caring touches of Mina as she came in to help him finish packing prepared food, meant a lot to Katsuki. Not that he'd ever tell them.

Aizawa, through all this, was an unexpected support. Katsuki was under the impression that Aizawa hated teaching his class, but the care shown to Izuku indirectly (Aizawa never saw Izuku the entire time as he respected Izuku's den and Katsuki's permission to be there) was enormous. And, by default, to Katsuki. Katsuki suspected it was because he obeyed everything that Aizawa laid out for him. He never lingered in Izuku's room, he constantly texted Aizawa (even during school hours) to let him know what was happening. He texted when he entered Izuku's room and when he left after Izuku fell asleep.

Katsuki did everything to the letter. Aizawa was strict, but he was also kind to those who followed his instructions. Which Katsuki was.

One night, as Katsuki tiredly put together a meal for the next heat wave, Aizawa came in looking for something to eat. Katsuki offered some of the meal he'd made for himself, and they ate together. It was late, close to midnight and Izuku had fallen asleep an hour earlier. The rest of the class was asleep and Katsuki wondered why Aizawa was still awake. It was a school night and there was class in a few hours.

At first, they didn't speak much, but then Aizawa asked him about something to do with one of their practical lessons the week before, and Katsuki gave him a short answer. Despite Katsuki's somewhat surliness, the conversation developed into an eye-opening one for Katsuki. Aizawa, again who he thought didn't much care for him, showed that he was a teacher who did care deeply for his students. They spoke of Katsuki's future and the direction Aizawa thought he should take. They compared notes – not criticism per se, but impressions – on the the other students. They even talked of Izuku. Before Katsuki knew it, he had spilled his and Izuku's history, his own dreams, and about their talk before the heat started.

Katsuki thought he should have been embarrassed to be so open about himself. He was often guarded and rarely let anyone in. Izuku was the only one who had ever gotten into his head and his feelings, and that was only a few days ago.

To his surprise (this week of Izuku's heat was full of surprises), he wasn't embarrassed. It felt good to talk over everything to someone outside of the situation. Aizawa was a sympathetic listener, but didn't offer advice, as if sensing that Katsuki didn't really want it. Katsuki just needed an ear, not platitudes.

"I think everything will work out," was all his teacher said. "Izuku is particularly attached to you. Whether that's something friendly, or more, is something he needs to tell you. But, you already know that."

Katsuki nodded, picking at the remainder of his late dinner, pushing a piece of chicken around with his chopsticks. "I'll talk to him when this is all over."

"Good."

They finished their meal when it was well after midnight. "I should make tomorrow's meals before bed."

"I'll clean up the table if you need to finish in the kitchen," Aizawa offered.

Katsuki hesitated, but finally nodded. It would help because he really needed to get the meal finished and packed away and get a few hours of sleep himself before Izuku's heat wave started.

"Thank you, sensei," he said. Though it came out rusty, it was sincere.

"My pleasure, problem child," Aizawa said, shooting a grin at Katsuki that made the young alpha lift his eyebrows. He didn't expect his teacher to have much of a sense of humor. Katsuki shook his head. His mind had done too many flips this past week for his liking.