Warning this chapter may contain inappropriate language and mature content.

CW - mentions being left out, struggles with eating and forgetting

Info - this one shot does contain age regression. This is a sfw coping mechanism. Nothing is sexual. If that makes you uncomfortable either way then please skip and don't leave anything negative in the comments. My books and account is a safe place for age regressors and everyone else! <3

Ship - platonic BakuxBakusquad

Little(s)! Bakugou and Kirishima

Caregiver(s)! Mina, Denki, Sero, Jirou and occasionally Shinsou

-

Bakugou's pov

I huff, stretching my aching arms up above my head as I settle back down in to my seat at my desk. Training was.. rough to say the least.

Training hurt so bad. My hands are still going through the after burn from my explosions. My lungs hurt from smoke inhalation, I need my inhaler but that's back at the dorm. My head is fuzzy from the pressure of training and the ache spreading through my body.

"Mih.. -na.. fuzzy.. Kiwi" Eijiro mumbles softly, tugging in Mina's blazer as the squad stands around my table. They all have sugar filled drinks to get their energy back up.

My diet doesn't allow those kinds of drinks on week days or right after training. I'm allowed fruit juice, water and protein shakes. The occasional glass of milk as long as it's not full fat.

"Awe, that's okay sweetheart.. let's get you some apple juice and we can get Momo to make you a colouring book and crayons" Mina suggests softly and I watch Kiri smile happily.

"I'll go get juice, you want any Kat?" Sero asks softly and Denki cuts me off before I can even start.

"It doesn't fit in to his weekly drinks he's allowed.. just get him a bottle of water" Denki says and I bite my lip.

I really wanted apple juice too. Everyone begins to go off in the direction of Kirishima's desk. I watch them leave with hopeful eyes, hoping one of them will come back and give me attention. Yet.. none do.

Sero returns after five minutes, carrying a few drinks. He hands them out before smiling softly as he slides a bottle of apple juice on to my desk.

"For my favourite little boy.. come over if you need anything okay, I know you don't like people knowing when you're feeling small in school" Sero says softly and I smile a little, feeling really appreciative and loved by Sero.

<~>

I yawn softly, foot tapping on the floor as my thumb nail rubs over my dry and cracked lips. I chew on the inside of my lip, the urge to just suck my thumb and happily regress with my juice.

The bell rings, startling me from my laid back position at my desk. I quickly grab my stuff. I want nothing more than to go back to my dorm and regress peacefully. I know Sero will probably come check on me.

The others don't tend to notice like he does when I regress. It goes unnoticed by them but Sero, Sero knows every time.

I yawn as I enter my dorm, deciding to lock the door behind me. I change in to my duck onesie before grabbing my favourite duck stuffy and a yellow pacifier. I grab my laptop and sit on my bed, putting Sarah and Duck on.

I sit back on the bed absentmindedly watching the show as I suckle on the pacifier and contemplate leaving to get some juice in my sippy or just drink the water left over in my bottle.

"Missy.. 'ould we get juicy? Or huh juicy cu'z peopwe out d'ere scawy.." I mumble to my duck called Missy.

She quacks back to me about wanting apple juice so we're going to have to leave to get that. I inhale heavily, deciding to brave it and go get some juice.

"Tay.. we gotsta be ext'ah shhh" I say softly, letting my footsie pajamas touch the floor.

I move slowly, unlocking my door and creeping out with my sippy in hand. It's got a bear on the front and a white lid with a spout. I walk down the hall, keeping quiet and occasionally stopping to hush Missy.

We soon sneak passed everyone in the common room and head straight to the kitchen. I fill my sippy with apple juice, spilling a little on the counter. I don't bother to clean up or even put the carton back.

I sip my drink, putting my paci besides the carton before I head back to my room. I continue to drink my apple juice as I stumble back to my dorm. I curl up on my bed.

Soon enough the juice is mostly gone and my eyes are heavily lidded. I haven't even had dinner but I'm too tired to care.

Sero's pov

"You feeling big again Kirishima?" Mina asks softly as he sits on the sofa after going to the toilet.

"Yeah, I could go for food though. I'm hungry" Kiri say softly, gently rubbing his stomach.

"Umm.. does anyone know who's pacifier this is? I kinda found it besides a carton of apple juice that was left out" Momo asks softly as she comes in from the kitchen.

"Not Kirishima's.. so I don't know" Mina says softly and my eyes widen at the sigh of the yellow pacifier.

"Shit.." I mumble softly before getting up and taking it from her.

"I.. didn't know you regressed Sero" Momo says softly and I shake my head.

"Not me, someone else.. I'll be back!" I exclaim before dashing off to go check on Katsuki.

I knock softly on his door, finding it unlocked when I get there. I quietly enter, finding Katsuki fast asleep in bed. His face tucked in to a stuffy and a blanket with a show playing softly in the background.

I smile softly, moving to close his curtains and plug in the nightlight. It plays a soft lullaby and shines coloured shapes on to the ceiling. The brightness being comfortable to the eye, even when you've just woke.

I turn Katsuki's laptop off before kissing his forehead, tucking him in and putting his pacifier in to his mouth. I leave a note on the laptop that I place gently on the side before leaving. Just so he doesn't get too alarmed.

I slip back down to the common room, grabbing a cup of coffee on my way back. I sit on the sofa with a sigh, sitting my mug aside as I wait for it too cool enough to be drinkable.

"Everything alright?" Mina asks softly and Jirou looks up from her phone.

"He small?" She asks and I hum.

"Asleep though, but I don't think he has eaten today.. at all" I say softly and Jirou looks concerned.

She doesn't tend to hang out with us during the day, spending time with the so called "emo" squad. It's just her, Shinsou and Tokoyami. Momo tags along with them though because she's dating Jirou.

"Not even breakfast?" She asks and I shake my head.

"Normally we'll have syrup covered pancakes together.. but, he skipped breakfast and went straight in to school.. lunch he disappeared in to the toilets.. I dunno, think it might be from his slight cold" I explain, not wanting to worry myself too much but it is concerning.

"I'll make him the little heart sandwiches with Momo and leave it on his bedside table with a snack bar, put a little dish over the top so they don't go stale. He wakes in the night so snacks and juice are needed" Jirou says softly and I hum.

"Thanks J, that's great help. I think I might camp out in his room tonight on the floor. I don't know how small he slipped to so he might have nightmares or something and need immediate company and attention" I say softly and she nods with a smile.

"When.. can I play with him? You guys never let us play together" Kirishima mumbles, picking at his lip.

"He.. doesn't share, when you're both small, you'll fight. It saves punishments and arguments" Denki say softly and I look away.

"But.. he can share. We play together when we regress privately together and don't bother you guys. We have Sero watch us and he's nice" Kirishima says and Mina looks to me.

"I just always assumed he would have explosive outburst when small. His emotions are hard for him to deal with when big, let alone when he's small" she says and I shrug.

"It's.. he's in therapy to deal with his emotions. His regression helps him because it's simpler when he's smaller. You guys just don't want to deal with his toddler head space" I complain and Mina tries to deny it but I walk to the kitchen to avoid an argument.

Jirou and Momo are making food anyways. They have looked after Katsuki twice. Once was right after a nightmare whilst he was in baby space so it was simple. Just make him some angle milk and tuck him to bed with a story and his nightlight and bear.

Then once when he was toddler age and slipped at the mall. He had a tantrum because we couldn't stop to go look in a shop because Denki wasn't feeling too good.

They find it difficult because Kat can have serious mood swings both in and out of headspace. He can go from happily playing or watching a show to needing calm down time in the span of thirty seconds.

That's just what you have to be prepared for. Little Katsuki is easily overwhelmed. He doesn't like to change what he's doing until he's deemed himself finished.

You learn that pretty quickly. He doesn't like when he's watching a cartoon and you ask him to go put something away. Or go for a potty break mid way through a game.

He doesn't like having to stop for food. It's just that Katsuki doesn't like to leave stuff unfinished in his head. He is generally a really well behaved little. They just don't understand him.

I've got a surprise planned for this weekend that I'm hoping he'll like. Me, him and Kirishima are going to have a fun little weekend together.

It's be nice for them to get to regress and play together anyways.

<~>

I wake to the sound of plastic hitting the floor. Katsuki's dorm doesn't have carpet. Just rugs laid out in different places. I look up, finding Katsuki watching his now empty plate on the floor with wide eyes.

"Hmm.. morning sweetheart, did you enjoy the food?" I ask softly, sitting up and picking the plate up for him.

"Mmhmm.. m'swowy if I wokes ou" Kat slurs out, rubbing his eyes and I shake my head.

"It's alright kiddo, papa is here for you whenever.. you don't have to worry about waking me by accident" I say softly and he nods with a small smile.

"Can.. I watch movie an' ou sleep 'gain.. papa sweepy" Kat says softly and I smile.

"How about you pick a movie on Disney+ and we can cuddle and watch together" I say softly and Katsuki happily accepts.

I grab my laptop and get comfortable on his bed with him. We cuddle, deciding to watch sleeping beauty together. I'm not awake for long through the movie but Katsuki is fast asleep with the laptop paused on the end credits of the movie by morning when I wake.

-

Word count - 1971

Hello cubs, I hope you all enjoyed this one shot. Please make sure to look after yourselves, take your pills if needed and make sure you don't bind too long. Drink some water and grab a snack if you need! I love you guys <3