DadMight and Izuku (hit by a age/body regressing quirk) AU
(i'm not a writer and English is my third language, this is just a brainrot i had to get out lol)
When Toshinori got the message from Aizawa about “his problem child getting into problems again” he was ready to call a taxi to the nearest hospital or even the police station, he certainly wasn’t expecting THIS.
In the teacher lounge sitting on a chair was a very familiar green haired teenager… no, a toddler. He was wearing a very loose tshirt and some shorts, probably given by a smaller student, they were still very big on the kid though.
“What… happened? Young Midoriya are you okay?” Toshinori kneels in front of his the kid checking for injuries.
“There was an incident in the city and they were assigned to rescue the civilians involved. Midoriya was pulling an injured civilian from under rubble, and they accidentally activated their quirk. I guess you can figure out what their quirk is.” Aizawa points his thumb to Izuku. “Apparently they are a therapist specialised in childhood trauma or something like that. From their file they usually have a very good control on their quirk and how long the” he again points at Izuku “lasts. But they got a pretty bad concussion so we really don’t know when Midoriya will change back. Usually with their patients they make it last a day or two.. but there has been cases where the change has last a week or two.” Aizawa sighs and takes a sip of the cold coffee that was sitting on his desk.
“Oh…” Toshinori looks back at Young…Younger Midoriya and exhales a laugh. “You certainly got yourself in a bit of a pickle, kid.”
Izuku simply stares at the man confused and also a bit scared. The black haired man assured him that he was a hero and that he got in an accident, he also saw the UA entrance while he was being taken there so he wasn’t lying to him. He should be excited because he is at UA! And surrounded by heroes! At least he thinks the blonde man is a hero.. he knew his name though so maybe they are acquaintances?
“You look like you have a lot going on in that small head of yours, any questions?” Toshinori smiles attempting to look friendly and ease some of his the kid’s worries.
“U-Uhm.. when is my m-mum coming?” Izuku asked quietly looking at the men from behind his bangs.
Aizawa stands up from his desk and stands next to Toshinori. “Mrs Midoriya has been already notified about your… situation. She is currently out of town but she should be back tomorrow morning. From her last update she took the first train home so you will see her soon. For now I was thinking of simply keeping you at the dorms.. but-”
Izuku’s eyes start welling up with tears. “I can’t go home?”
Seeing the tears Toshinori starts fretting over his pupil trying to calm the toddler down “You can! It’s just that Inko-san is not home yet and-“ he stops himself and takes a deep breath. “Everything will be alright, Young Midoriya…..Give a second.” Toshinori stands up and nodding to Aizawa the two man leave the room.
“I can take him home. I don’t blame him for being freaked out, he has no memories and we are basically strangers to him right now. Making him stay in a place unknown to him would simply stress him out..”
Aizawa looks at the former Number One Hero. He always knew he had a big soft spot for Midoriya, after all he was aware now of their story together. What intrigues him though…
“And how exactly will you enter the Midoriya’s apartment?” Aizawa raises his eyebrow at the man, not pointing out him using the first name of the boy's mother.
Toshinori looks quizzically at his coworker for a couple seconds… suddenly all the blood rushes to his face making him look like a tomato.
Aizawa pinches his nose bridge and sighs. All Might really needs a working etiquette lesson. But he won’t snitch on him… the gossip-loving rat probably knows already.
“Forget I asked. I don’t wanna know. Just take Midoriya home then, and notify his mother about where he is staying. IIda already brought his bag and some stuff so take that as well.” And with that the Underground Hero left leaving the older man alone.
Alright, Toshinori! You saved thousands of people, you can take care of a toddler for a day.
Toshinori goes back into the teacher lounge and looks down at his pupil. Izuku is still sitting on the chair playing with the hem of the oversized shirt folding it over and over again.
“Young Midoriya!” The kid startled looks up with reddened eyes. He stopped crying but he can see that the waterfalls were not over yet. “Cmon I’m gonna take you home!” He smiles.
Izuku jumps down the chair and looks up at Toshinori hopefully. “Is my mum back then?”
Toshinori kneels in front of him and puts his hand of his fluffy head. “No, she will still be back tomorrow morning. But we figured out it would be more comfortable for you waiting in your home rather than here. But do not worry!” He hits his own chest and uses his All Might voice. “Because I will keep you company!”
Izuku stares at the frail man in awe. He just did the best All Might voice he ever heard! Is he also a fan? Since he is in UA is he a hero as well? Did he work with All Might? But All Might has no sidekicks, did they do missions together then- Izuku’s thoughts stop hearing the man.. his babysitter’s laugh. He notices how often he looks at him fondly, just like his mum does. He wants to ask what is his relationship with the “older Izuku”.
“You are mumbling Young Midoriya” Toshinori smiles and ruffles his hair. “We have the whole day together so keep your questions for later. Although I can’t promise I will answer all of them. Hero secrecy and stuff.” He winks and laughs again seeing Izuku getting even more excited.
“Now let’s get you home. It’s almost lunch time so I bet you are hungry!” He picks up the kid’s backpack and goes to the door.
Suddenly he feels a tiny hand hold his way bigger one. Toshinori has always been tall and big in general, training his body all life made his hands rough and full of callouses. He gently squeezes the tiny hand, looks down and gets greeted with a precious smile.
This will be more challenging than he thought. He just hopes his weak heart will be able to handle all the cuteness that radiates from his the kid.
