"Kacchan?"
Crap, crap, crap. Okay, Katsuki knows where he is, sure. He's in this house that his mother had supposedly been working on for a while. Easy enough. Okay, next. He's clean, he's eaten. Could he be hallucinating from lack of sleep? No, not possible, he'd only woken up an hour ago. What's next? The trim alongside the bottom of the walls was a lovely baby blue. If anything he would've preferred a deep emerald green. Kind of like the eyes staring directly at him.
"Kacchan, are you alright? You've been gripping the floorboards really hard. I'm afraid you're going to tear the house apart and I just moved in." The nerd had the nerve to tug at the hem of the shirt he was wearing (Katsuki was positive now, that was one of his shirts) exposing more of that pale, freckled neck. Katsuki noticed belatedly that the omegas evergreen scent had already began to permeate into the walls of the house. There was no escape for him.
"Ha...ha, you're asking me if I'm alright? You really are a damn Deku, huh?"
"That's fine and all Kacchan, but you still haven't answered my question. What are you doing here? And was that your mom, was she here to say goodbye? How rude of you to slam the door in her face!"
Katsuki pulled himself up from the floor and dusted his pants off, admiring the craftsmanship of the room around him. Fully furnished, the house looked perfect for a new couple to start their new life together. Alright, now Katsuki needed some fresh air. He pushed past a still mumbling Deku and into the kitchen, headed straight towards a window facing a fenced-in backyard. Looks perfect for raising a pup, Katsuki's inner thoughts supplied him. "Shut the fuck up," Katsuki supplied back.
"S-sorry, I've been mumbling again, haven't I?" Katsuki winced as the omega's scent immediately soured. His instincts screamed for him to bring the shorter man closer, but he settled for waving a hand in Izuku's general direction. "Not you nerd."
"Oh. Then who, Katsuki? Is there somebody outside?'
This was quickly becoming frustrating for Katsuki. He generally spent most of time alone unless he explicitly sought out company. His so called 'friends' were an exception, but even they sometimes couldn't find him. Here he was, on house arrest or whatever the old hag had called it, enclosed in four walls with the deepest of his desires only an arms length away but so painfully far away.
"Fucking forget about that. Aren't you supposed to be in heat? You look perfectly fucking fine if you ask me. You smell a little bit more than usual anyway." Katsuki said in between gasps of fresh air.
"Sorry, I guess. I don't usually have to worry about my heat, since people can't smell me when I'm in heat anyways unless I purposely rub my pheromones on something. And even then, Iida once told me that the pheromones smell empty. I just- agh this is confusing me. I'm just not used to having to worry about people smelling me."
"You get a kick out of leaving your scent everywhere? Could fucking smell you all over the village."
"What's wrong Katsuki, jealous?"
Well, that was new. Katsuki might've been zoning out because, now that he glanced down, he was quite surprised to see a certain green haired omega attempting to drape himself over Katsuki's body. "Hey, watch it!" Katsuki grasped Izuku's wandering hands between his own, causing the omega to fall forward into him. "What the hell's gotten into you?"
"I guess this is all normal. What's wrong Katsuki? Never been around an omega in heat before?" Izuku giggled, he fucking giggled, and Katsuki watched as the breeze from the open window play with his hair. Katsuki licked his lips, coming back to reality after realizing his claiming teeth were popping out.
"You're really fucking touchy. Normally you'd be running away at the sight of me. Is that because of your heat, too?"
"Awe, Kacchan is so smart," Izuku retreated from the flustered alpha. "Omegas usually seek out physical contact during the first stages of their heat. Then will follow the nesting phase, and the *ahem*," Izuku turned away from Katsuki, trying and failing the hide the blush falling on his face. "Then will come the really horny phase, and after that the heat's over, and I'll usually be back to normal."
"Hah? We were told that omegas were usually always helpless during their heats. What's that about?"
"Oh, that's only when you try to suppress your heat with medicines. Like I said before, I never had to worry about people smelling me in heat, even though my mom usually made me stay indoors."
"Alright, one more question. Who the fuck brought you here."
"My mother. She woke me up this morning and told me to get ready. This was really a big surprise, I didn't think the chief would grant me a whole house all to myself. I can't wait to start decorating it with the flowers I've been studying."
Okay, great. So Deku didn't know he was going to have an unwilling roommate. And on top of that, he was going to fill this place up with wildflowers. Katsuki could feel his blood boiling.
"About that nerd. This house isn't just for you. My mother built this house for me. She intended to give it to me when I proved myself as a man to her."
"Oh that's great Kacchan! What did you do to prove yourself to her?"
Katsuki took a long, hard look at Izuku, then did a once-over over the omega's body, then came back up to look Izuku in the eye.
"I don't get it, Kacchan. What did you do?"
"Well, since the old lady never waited for an explanation, you. The old hag thinks I did you."
An awkward silence stretched out between them. Katsuki took the opportunity to notice the fine detailing on the walls, the thick carpets made of animal hides strewn around the floor, and what looked like three doors leading to three other rooms besides the one they were in. A bathroom, and two bedrooms? Perfect for Pups. Gee, thanks for that, brain Katsuki thought.
Finally, Izuku squeaked out a response. "O-okay. S-so your m-mother thinks that, that we're…"
"Mates, bonded, expecting a child probably. She smelled your heat pheromones all over me when I came home, and since they probably lacked an identifying scent, she probably knew exactly who they came from."
Katsuki took a step closer to the omega, whose earlier confidence seemed to ooze out of him slowly.
"So this is technically my nest, omega. And you seem to have made yourself right at home, haven't you?" Katsuki reached a hand up and finally, finally, dared to run his fingers through Izuku's hair. Impossibly soft, it was every bit what Katsuki imagined as he watched the tension flow out of Izuku. "How haughty. Do you know what they call omegas who make themselves at home in an alphas nest?"
"What?" Izuku was hardly paying attention anymore, instead giving his undivided attention to the hand weaving through his hair, much like a kitten. A cute, green, live wire of a kitten.
"Claimed."
Izuku jolted away from Katsuki, leaving the other staring at the empty space where the omega once stood. Katsuki's hand hung still where he was once playing with Izuku's hair. Where the fuck did he go, Katsuki hissed as he whipped his head around. Down the hall, a door opened up to a bedroom, and out came bounding an Izuku wrapped up with what looked like fresh linens.
"I'm headed towards the river to wash up, don't wait up for me, don't come after me!"
The door that Katsuki had been trying so hard to push out from the inside swung open. In came a rush of sunlight and the scents of the village, and out went his omega. It honestly should not have bothered Katsuki this much. He and Izuku weren't even mated yet, Izuku's neck bore no mark of his, nor any others. And yet, his alpha was quick to claim the short, tantalizing omega.
Well fuck this. After all Katsuki had done to show that oblivious nerd that he, the alpha, was comfortable with him in what was supposed to be their new house, that insufferable omega just ran off. To bathe no less, and wash off any scent of Katsuki's that might have stuck to that compact body of his.
No, no. This wouldn't do. Katsuki was going to have to go down to that stream and drag that omega back to their shared house. And, after that...he had no idea. But he had to start somewhere. Katsuki rushed out in search of the green haired nerd, eager to ignore his mother's warning to not leave the house. After all, his omega was out there, in heat. Izuku needed him, right?
