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English
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Published:
2023-10-30
Updated:
2023-11-05
Words:
3,723
Chapters:
3/?
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7
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173
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Bakugou-sitting.

Summary:

Bakugou gets de-aged by some randos quirk so Aizawa & Class 1-A gotta help out.

Notes:

He isn’t a baby, he just acts like one ig. I don’t know specifically how age regression works or affects one fully but I’ve read many fics about it and thought I may as well give it a go while I have nothing to do.

( I’m gon try not make it so cringe )

Chapter 1: Here we go!

Chapter Text

 

Kirishima stared at the door leading into his form room, for some reason he felt hesitant to enter it. Oh yeah, that’s right, he woke up real fucking late. Aizawa is going to be so irritated with him, he’ll probably make him clean the whole common room..EUGHHHHHHHH.

 

After a few takes, Kirishima edged the door open and stepped inside. 

Kaminari instantly ran forward to meet the red head, “Heyyy!!”

 

“oh- hey! Where’s Aizawa sensei,” Kirishima asked, looking over to where his teacher would normally be stood and where he would be now giving a lecture about tardiness to him. 

 

Kaminari shrugged, “Dunno, we’ve been waiting for him for ages. Where’ve you been?” 

“Asleep…”

 

“Paha! You never oversleep, man, rough training,” Kaminari snickered, bumping his elbow into Kirishimas. 

Kirishima simply rolled his eyes with a smirk, trudging over to his desk with Kaminari following. Sero was already sat behind his desk, scrolling through his phone with a concentrated pout.

Kirishima exhaled lightly, chucking his head on his desk with the realisation that he was off the hook with his lateness. 

Sero leant over suddenly, “Hey man! Overslept?” 

Kirishima nodded , with his head still on his desk, holding a weak smile of relief to himself. He could hear light chuckled coming from his friends, but he was too tired to check on what it was. 

“Hey- Kirishima? Do you know where Kacchan is? He’s never this late.” 

It was Midoriya, standing to the right of his desk with a distraught expression. 

Kirishima looked over to where Bakugou would usually be seated then turned back with the same look, “No, no I don’t, Sorry.”


“Oh, ok. That’s fine,” Midoriya replied, holding a hand out whilst he turned from the three.

 

Kirishima stared at his lap, brows lowering as uneasy thoughts churned through his mind.

 

“Oooh, look who’s worried bout his best bud,” Kaminari teased. 

“I mean—

 

“Hey guysss!~”

 

The three boys looked up to the pink tinted female, all looking rather surprised.

“You’re late, way too late,” Sero stated, narrowing his eyes.

 

Mina nodded confidently, “Uh- yehh! Got a text that Aizawa wasn’t here yet so I took my time.” 

Kirishima scoffed softly, “That’s fair.”

 

Mina grinned, sitting herself down and placing her blazer on the back of her chair before turning , “Mhm! So, where do you think he iss?”

 

“Probably found a cat.”


“Why a cat?”


“Dunno, looks like a cat person.” 

“huh, he does.” 

“I think he just didn’t get coffee.”

“Hm, Yeahh that’s probs it.” 

“nonono, definitely a cat.”


“Kaminari he knows better than to follow a cat around than leave his students!!”

“sureeee..”


“Kaminari’s got a point.”

“Are you serious Sero????”


“I still think coffee..”

“Thank you Kiri!”

“But there might be a chance..”

“Don’t test me right now Kiri, I swear—

 

“Sorry I’m so late, there was an incident that was yet to be resolved,” Aizawa sighed as he entered the classroom, “Mina eyes forward, Uraraka you too. Mineta stop talking, Midoriya stop talking to him.” 

“Sorry Sensei,” was simultaneously called out from the mentioned students, even though Midoriya was stopping Mineta from making uncomfortable remarks about the girls. 

“Aizawa, senseiiiii!!”

 

“What is it, Kaminari?”

 

“What was the incident?”

 

“I’ll tell you when I feel like you deserve to know, and that’s definitely not now when you interrupted me.”

 

“Sorry sir!” 

“Mhm..”

 

Midoriya placed his hand up, fixedly glaring into his teacher.

 

“What is it?” 

“Where’s Kacchan?”

 

Aizawa stared at the boy for a moment, forgetting about the little nickname thing they had going on. 

“oh- hm,” Aizawa cleared his throat quietly, “Right. Bakugou has been inflicted by a quirk which has caused his mind to regress to that of a child.. an infant.”

 

The whole class sat silent for a whole five minutes before Iida rose from his desk, “Is he alright Sensei? Does he need any assistance? I know we- 

 

“He’s fine for now, Iida. But thank you for you concern,” Aizawa indicated for the student to sit before continuing, “ and I’m going to need to borrow Midoriya as well as Kirishima.” 

The two boys looked to one another before standing with the signal from their teachers movement out of the room. 

“This is gonna be amazing,” Sero uttered to himself as he watched the two exit. Kaminari nodded, and the buddies began talking. 

 


— outside 1-A 

 

 

“What’s the—

 

“Midoriya, it seems you’ve known Bakugou for longer than all of us, so I’m going to need to you to help with the process of caring for him before he gets back to himself,” he informed the green haired boy before turning his attention to Kirishima. 

“I’m guessing I’m helping as well?” 

“Yes, I noticed how much you too ‘get along’ so I assumed that he might also be fine with you caring for him alongside Midoriya.” 

“nicee..” Kirishima whispered to himself as he gazed to the floor. 

Aizawa clicked his fingers, “You can fawn over this later, you need complete focus for class and when you’re with Bakugou.” 

“who’s with him now?” 

“euhh..” 

 

 

.

 

.

 

 

Mic stared at the kid, hands on his lap as he awaited for some sort of order. Bakugou was simply meeting his gaze, eyes wide with fascination to the man’s outfit. 

The boy pointed his hand up, “spike..” 

 

“huh- oh! Yeah my hair is spiky! You’re so clever aren’t you.. for, however old your brain is right now.” 

Bakugou smiled shyly, turning his head and playing with the microphone he was handed. 

“Hey, if you press that button- yeah that one- then you can talk into it and it’ll make your voice loud.” 

The boy blinked, dumbfounded to Present Mic’s explanation. The teacher, noticing this, took the instrument from the boy and pressed the button. 

SEE?”

 

Bakugou jumped, his eyes instantly coating with tears. 

ah-“ Mic squealed, chucking the microphone to the side as he leant down onto the floor next to Bakugou, “nono! I’m sorry kid- shh..”

 

Bakugou held his hands over his ears, the tears flowing like miniature waterfalls down his rosey cheeks.

 

 

.

 

.

 

 

 

“Let’s not worry about that now,” Aizawa mumbled, “ you can sort out a timetable of who does what and when, then do it. I’ll be with him in the common room after classes so you won’t need to worry about how long you take.”

 

Midoriya began fiddling his with fingers, “How long will he be like this?”

 

“We haven’t got the precise timing yet, but hopefully it won’t take too long. So, if you are going to make a timetable, make one for a whole week. Got it?” 

“Yes Aizawa Sensei!” 

“Good, now, c’mon,” He demanded, rushing the boys inside the classroom.