Chapter Text
‘You should totally get that one, Ochaco-chan!’
The rest of the Dekusquad nodded simultaneously, agreeing with the green haired boy.
Ochaco looked proud and confident in the dark blue jean mini skirt she just found. It was on sale too!!. It had pink stars embroidered on the sides and fit her and her style like it was made for her.
Ochaco smiled.
‘Then it's decided, I'm getting it!’
This is how it went on, the five heroes-in-training walking around the mall, someone occasionally spotting something cool and the rest tagging along to look at it and maybe buy it.
Later on, when every one of them had already bought themselves something, they saw a cute cafe and decided to have lunch there. Izuku snapped a quick picture of his lunch and sent it to Katsuki and his mom.
The teenagers were very glad to have convinced their homeroom teacher about going out. One might think that that isn't a big deal, but for UA students it was mandatory to ask. They had a history of getting attacked by villains in public places.
It took Tenya and Tsuyu going with them as ‘the responsible ones’, Shoto and Ochaco standing and nodding along to everything and of course, Izuku using his puppy eyes and promising Eraserhead to not break anything.
With a sigh, Aizawa agreed reluctantly since however nonchalant he may appear, he has come to care a lot for his problem children and to trust them and he obviously wanted them to have fun.
They're teenagers. They deserve this one after all the stress and fights.This won't turn out to be another disaster, will it?, Shouta asked himself as his students practically bolted out of the dorms as soon as he agreed.. He sighed again, walking back to his dorm room and falling asleep as soon as he laid down on his bed.
*
The sun was close to setting when the Dekusquad exited the mall to start the walk to the dorms. The dorms being only a 20 minute walk away and the weather being good made the teens not take the train like they thought they would.
They were still laughing about some stupid joke Shoto made without even realizing, when Izuku, having his guard down, bumped into someone.
He apologized at least ten times and helped the stranger up since he’d fallen, only then seeing the stranger’s eyes widen.
‘Is something wrong? Are you okay?’, the greenette immediately asked, thinking the other was hurt or something similar.
‘Yes, yes I'm fine.. Oh God this is so embarrassing… I… I think I might've.. uh accidentally used my quirk on you.’
The civilian finally said.
‘Huh? Used your quirk on me? What does tha-’
Izuku didn't get to finish his sentence, and in the blink of an eye, he was gone. The only thing left was a pile of his clothes where he had been standing before. No, not the only thing.
Right on the clothes, there was…
A cat.
A fluffy cat with dark green fur and big eyes. Eyes that were a bright, vibrant green and the exact same as Izuku’s.
The rest of the dekusquad just stood there and didn't even have time to express their confusion when the civilian started explaining his quirk at a high speed.
‘He’s fine, he's not gone, it's just my quirk is, it turns people into, cats for like, four days. It doesn't even affect their minds and memories, the person just has a cat body and there's no side effects either, so...’
Tsuyu was the first to speak up after an awkward pause where everyone just stared at the cat (?) and the cat stared at the teenagers.
‘So this is Midoriya-chan, kero?’
‘Uhh, yeah. I'm really sorry about this, I got startled when we bumped into each other and accidentally activated my quirk. My control over it isn't that good yet, I was a late bloomer so... Again, I'm very sorry.’
The civilian bowed before the young heroes, cheeks slightly red with embarrassment.
It was Tenya who spoke next, accompanying it with his iconic hand chopping motion.
‘It’s okay, Sir. Though you do need to be cautious even in public with your quirk, accidents happen, and if what you told us is accurate then it isn't that big of a deal.’
Todoroki chimed in. ‘So Midoriya knows he’s a cat right now and can understand us and knows who we are and all that?’
‘Yes he does, at least that's what's supposed to happen.’
‘We should test it. Hey Deku, do you understand us?’
Uraraka was already kneeling down in front of Cat Izuku and looking down at him curiously.
The green cat meowed and moved his head up and down, just like a nod.
The squad collectively gasped, now being sure Midoriya was okay they could relax and indulge in their friend being a cat.
In mere seconds, they were all around him. At some point Ochaco had picked him up and now they were all giggling and cooing and petting his head like it was a normal thing to have your friend being turned into a cat.
With Class 1A, things like that happen a lot.
‘You are cute as a cat, Midoriya-chan. You are cute normally too, though, kero.’
‘She’s right Deku, oh gosh I love this! You're so soft and your eyes look like you when you're, uh, human and again, your fur is so soft and fluffy!!’
Todoroki didn't have much experience with animals, so even if it was Izuku, he'd rather just pet him a few times instead of switching in holding him, like Tsuyu and Ochaco.
The man with the cat quirk just stood there awkwardly, not knowing what to do now. Tenya turned to him while his friends were all busy with Cat Izuku.
‘Would it be okay if you gave us your number or some other way to contact you, Sir? I think it would be helpful if we have any trouble with the quirk.’
‘Yes of course, no problem, here.’
The civilian gives Iida his phone to copy the number to his own.
‘You can call me anytime, though I might not answer at night since I'm a heavy sleeper.’
‘That is nice of you, Sir. Thank you for your help, we'll be on our way then. Hey guys, come on let's go! We still have to tell Mister Aiazwa about this!’
*
A couple minutes later, Shoto decided to start a conversation again.
‘Do y'all think Aizawa will get mad at us?’
‘I don't know, but even if he does, it won't be much’
‘Why?’
‘Mister Aizawa is the biggest cat lover, he won't be mad for too long if we give him Deku.’
‘We should ask Midoriya-kun if he's okay with that, first!’
‘Are you okay with Aizawa petting you, Midoriya-chan?’
A content meow could be heard from Izuku.
‘He is okay with it, kero.’
The rest of the way didn't feel that long when the group had each other to talk to. Soon, they were already in front of the teacher's dorms, Iida texting Eraserhead to come down because something happened.
The teens were watching the sun almost completely set when their homeroom teacher burst through the front door of the building.
‘What happened!? Villain attack!? Someone kidnapped?! What is it-’
‘Cat.’
Shoto simply said, interrupting his teacher as Tsuyu picked up Izuku and held him in front of Aizawa.
‘....Where is Midoriya and why do you have a cat that strangely resembles him?’
‘This is Deku. I mean, the cat Tsuyu is holding. He got hit by a quirk of a civilian he bumped into. Now he's a cat for… how long was it, Iida?’
‘For about 96 hours, Mister Aizawa. He's also aware of everything, only his body changed. Midoriya-kun can still understand us and has all the memories he normally would have.’
Eraserhead just stood still, taking in the information with an unreadable expression on his face. When Iida was done talking, he looked between the teenagers and Izuku before sighing.
He was sighing too much these days. All because of the Problem Children staying true to their nickname.
‘Alright. I'm not even surprised something happened, but at least it's something harmless this time. But I'll still take him to Recovery Girl. Problem Child- Cat?, is it fine with you if you stay at the teacher's dorms tonight for observation purposes?’
A meow from Izuku.
‘That’s him saying “yes”, Aizawa-sensei.’
Ochaco explained.
‘Okay then, give him to me please, Asui.’
Tsuyu complied and Aizawa nodded quickly at his students.
‘And you, go back to the dorms and don't tell the rest of the class about this until I tell you to do so. Okay?’
A “Yes, Sensei” came from all four students at the same time.
Aizawa nodded at them one more time as a goodbye before turning away, opening the dorm door and stepping inside. Once the door closed, the four teens turned around, walking back to their own dorms. They talked about how to explain the Midoriya situation without telling the rest of the class about the quirk.
*
Shoto came up with the idea of telling the rest of the class that Izuku spontaneously decided to stay at his Mom's for the rest of the weekend.
None of the others were especially close with Midoriya, Aoyama maybe being an exception, but he didn't have Inko's contact either.
If they weren't so tired, they maybe would have remembered that Izuku had a certain blond childhood friend who knew Inko as “Auntie” and was very close with her.
That childhood friend immediately felt something off and texted Inko asking if Izuku was with her. It was when she said the last time she heard from him was when he sent her a picture of his and his friends’ lunch. He'd received that picture too, and hasn't heard from Izuku either.
Katsuki started getting worried.
He wasn't afraid to admit that now, yeah. He was worried. Of course he would be, he loves Izuku and he was a good boyfriend, of fucking course he’s worried.
He and Izuku might not have told anyone except their parents about their relationship, but that didn't mean he wouldn't go and blow up the extras Izuku called his squad if they didn't tell him where he was.
So that's what he did. He spotted Icy Hot on the way to his dorm, stopped him and got straight to the point.
‘Where the fuck is Izuku.’
‘Like we said, he decided to spend the rest of the weekend at his Mom's. What does it have to do with you anyways.’
Shoto had no problem lying straight to people's faces when he needed to, so he held Katsuki's eye contact while the other just glared at him.
‘No the fuck he isn't. I just texted his mom and she said he's not with her. Where. Is. He. Answer me before I kill you.’
Shoto struggled to find what to say then. It wasn't that he couldn't find an excuse, it was just that he was tired and did not want to deal with Bakugou’s shit right now. That's why he said what he said.
‘Ask Aizawa. I don't have the energy to deal with you right now, Bakugou.’
Mister Aizawa could handle Bakugou's weird personality. He asked about Midoriya like he was actually worried and cared but when he and Midoriya interacted, he teased him all the time and picked fights all the time. Shoto could not (and did not want to) figure out what his deal was for the life of him.
He walks to his dorm and enters it without even sparing Katsuki another glance.
But even if he did look back again, he would find no one there, because as soon as Katsuki heard him say that Aizawa knows what's up, he went straight for the teachers’ dorms.
It wasn't Aizawa who he saw first, though. It was Mic. He was in on the cat thing so he knew where Eraser and Cat Izukus were. Didn't mean he would tell Bakugou.
In the couple seconds Mic stood looking at Katsuki thinking of an excuse, Aizawa appeared behind the student with Izuku in his arms.
Before he could even call out to Katsuki to ask what he was doing here, Izuku already did. By purring. Loudly.
Katsuki whipped around to the sound to find his teacher standing there with a cat. He didn't even pay the cat any attention at first, he just started throwing questions at Shouta.
‘Where is Izuku?! I know he's not at Auntie’s and Icy Hot told me to ask you. Where is he!? Did something happen at their hangout!? Did his dumbass friends do something!? What-’
Katsuki was interrupted by the sudden weight on his arms and once he looked down he saw the dark green cat had seemingly jumped on him.
Wait- dark green? And the cats’ eyes… Yes, those were Izuku's eyes, he knew that. Had stared at them for long enough to know for sure.
‘Sensei, what the fuck? Why does this cat look like- don't tell me.’
Aizawa sighed and closed his eyes for a second before speaking.
‘Yes Problem Child Number 2, you are currently holding Midoriya. He's fine, he just got hit by a quirk earlier. Like you can see, it turned him into a cat. It'll last around 4 days and he still has his own mind, so he can understand you.’
Katsuki stood there silently, still dumbfounded by the block of information just thrown at him. Recovering from the confusion fast, he looked down at the cat- Izuku? who was already staring at him.
Izuku let out a soft “mrow” and began purring again while rubbing against Katsuki's neck.
‘I really don't want to interfere in…whatever this is, Bakugou, but I believe you should let go of Midoriya now.’
‘What why!? Can't he go back to the dorms with me??’
Aizawa sighed (again).
‘He has to stay in the teacher's dorms overnight for observation. The quirk shouldn't have any effects on him except the cat-like mannerism, but it's still safer if he stays in the same building as Recovery Girl for tonight.’
‘Nothing will happen, and he's going back to the dorms tomorrow. I’m gonna explain the situation to everyone and assign someone to take care of h-’
‘I volunteer.’
No hesitation. He didn't even let his teacher finish.
‘...Fine. But do let him go now, please.’
Katsuki reluctantly let Izuku down on the floor, then crouched down and pet him gently one more time. The blonde boy was amazed at how the fur was just Izuku’s real hair, curly and soft. He could've sat there for hours touching and petting it, but Aizawa cleared his throat, which served as a reminder for him to stand up again.
‘Goodnight, ‘Zuku.’
Was the last thing the student said before turning around and walking back into the direction of the students' dorms.
Shota and Yamada watched Katsuki for a second before turning their attention to Cat Izuku again.
‘Where will he sleep, Shota?’
‘If it's fine with the Problem Child, he can stay in my room.’
He glanced down, hoping for a “yes”. He's never admitted it aloud, but every teacher at UA and all of his students knew about his love for cats. He was hoping Midoriya would allow him to pet him too. He didn't say all that, though.
Soon enough, an agreeing “meow” came from Cat Izuku as he rubbed himself on Aizawa's leg.
‘Aww, since you're staying at Shota’s, can I pet you goodnight please?’
Mic liked cats too, of course not as much as Aizawa but he still very much liked them.
Next thing he knows, Cat Izuku is rubbing on him as well as letting himself get petted. Izuku has always liked the loud blonde English teacher. Reminded him of someone else loud and blonde.
A minute later, when Yamada was down petting the green cat, Aizawa opened the door for both of them as a sign to get inside now.
Aizawa walked up the stairs to his dorm room quickly with Izuku following him closely, having been in the teachers’ dorms a couple of times with All Might but never with his homeroom teacher.
Aizawa’s room is the second last in the hallway, the last being Present Mic’s. Shota opens the door quietly and waits for Izuku to get in too. Cat Izuku slowly peeks into the room before going in, hearing Shota get it and close the door behind him.
Izuku turns around to see Aizawa sitting on the floor, looking at him with a weird expression. It's almost like he's a bit…shy?
Izuku keeps looking at him as he walks to where his teacher is sitting on the floor. He questioningly meows as if to say “What is it, Sensei?”.
Eraserhead takes a moment to respond.
‘Can I uhh.. pet you?.. maybe..?’
Izuku is surprised that's what it was. He just assumed Aizawa knew he was allowed to, but well. He stared at his teacher, waiting.
Aizawa cautiously put his hand in front of Cat Izuku's face. The green cat rubbed his ear on Aizawa's hand, as if telling him he could, in fact, pet him all he wanted.
Aizawa was mesmerized, he was once again reminded why cats were his favourite animals and why he could wait to retire so he and Mic could move in and have a cat or two.
Aizawa continued petting Izuku's head and ears, the student seemingly enjoying his teachers’/father figure’s touch.
After a while, Izuku started yawning so Shota knew it was time for them both to sleep. It was late anyway. He didn't have a cat bed in his room, so Izuku jumped to the foot of his bed and rolled himself into one big fluffy pile there.
With the cat on his bed, Aizawa laid down too, falling asleep quickly.
*
It was around half past 10pm, far too late for Katsuki to be going to bed, but with the Cat thing, he stayed up later thinking about it. Izuku was really cute as a cat, Katsuki would have liked to have taken him to his room and cuddled him to sleep.
He really wanted to touch Izuku's fur again, it really felt just like his actual hair in his opinion.
But well, he'll see Izuku the next day anyways and he'll be the one to take care of him because he was the first one to volunteer.
Also, it angered him in the slightest that none of his other classmates noticed anything weird. It wasn't completely obvious that Izuku’s friends were lying, but it wasn't that hard to see either.
Katsuki thought over the whole thing some more, before eventually drifting off to sleep.