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Little Katsuki

Summary:

Katsuki locks himself away when in little space every time he is in it

except this one

he goes to Aizawa for love

Notes:

Heyyyyy
I love you like it cus honestly I loved working on it.

(See the end of the work for more notes.)

Work Text:

Aizawa was a good teacher even if he didn’t look, dress or speak the part. He was a good teacher becaus e he believed in his students and went to great lights to train the young minds into being the best versions of themselves and being the  best  Pro  heroes  soon in the future.   He owed that much to them.  

But time after time he caught glimpses of kids in his classroom looking less and less like children and more like veterans of a war.  Their hope and wonder filled eyes got drained and filled up once again with anxiety and tired hopelessness. He wanted to ignore it but in good  conscience he  couldn’t . Especially not when he saw how they would  flinch  at ever y  fast movement or noise.  

‘They will get desensitized to it soon’ he heard a member of the hero commission say to him after the USJ  

Pawns to their business  

That was when it dawned on him that no student, he ever taught had ever gone through anything like this. All the  earlier   batches  were taught on  the lap of  luxury  save for a few scraps and scars from being  reckless.  

But no, this class didn’t even have that. The moment they came to this school they were  doomed to live a life of horror. They were battle beaten, scarred and  scared. It didn’t matter how much they wanted to be a hero.   

A few visits to their homes and scooping around in their personal life was all it took to help him realize that it wasn’t even UA t hat doomed them. Half his class didn’t have the chance to even be children.  

Hound dog though loud and borderline obnoxious at least helped most of his kids through some of the internal struggles they were dealing with .  

Aoyama’s parents messy divorce and psychological abuse that he went through pointed him to have a little space  as a  way to  cope.  

Yaoyorozu’s blue blood linage meant that she was groomed and disciplined to never show a n ounce of childishness and she too joined Aoyama.  

After the Kamino incident even more of his students joined in, after Nabu island, even more.  

Aizawa felt like he failed so many of them.  

Especially Bakugou .  

He wasn’t one to join the play dates that the teacher watched over or even one to have a caregiver even though everyone knew the blond was a little . He secluded himself in his room each time he wanted to go into little space and when he came out, he was still the same foul - mouthed  top student that would curse at everyone.  It wasn’t until Kirishima saw his pacifier on the nightstand that they found out he was a  little,  but the boy didn’t c are for letting anyone interact with him in little space.  

Aizawa could only watch him lock himself in his room for an entire day and then come out.  

To time wasn’t a good night it seemed, especially for the explosive boy. He had gotten into a fight with his group of friends and they had decided to give him  some space to cool  down,   but something told Aizawa that what Bakugou wanted was not space.  Maybe it was how quiet he got after they told him that or it was him crying in the changing room after he went to check if everyone had left .  

Either way it  didn’t  matter. These friends  weren’t  here. Well, none of the students but Bakugou were here, they had de cided that for the extended weekend  they’d  rather go back to their families but with  the Bakugou parents in New York for New York fashion week the boy  wasn’t  given much of  a choice .  

Aizawa’s thoughts plagued him while he tried to catch up on correcting the essays from his other classes under the dim kitchen light .  Paper strew across the marble countertop and a single red pen between his scarred and calloused fingers as he read through the lines .  

Out of the corner of his eye he saw something crawling toward him but for some reason he didn’t feel the need to get into a defensive position.  Well with all the new security measures UA updated on only a week back he knew he didn’t need to worry.  

From the shadow he saw Katsuki crawl out with a pacifier in his mouth .  

The man stared down into wide red eyes that stared right back at him  in  silence .  

Katsuki grinned and cooed at him from behind the yellow pacifier a nd sat on the floor, patting playfully at the teacher’s leg.  

non-verbal  little is what Aizawa deduced  from the interaction.  

“Hello baby what are you doing down there?” he bent down and pulled the little onto his lap who immediately  leaned his head against the man’s chest “Aw, aren’t you a sweet little bunny”  he cooed back at the little, carefully caressing the smooth puffed up cheeks.  

Katsuki only turned his head and hide his face in his teacher’s chest at the statement. The boy even in little space  didn’t  want to be alone so he looked out  for the only person he would be comfortable being : Aizawa.  So,  he crawled to the man’s usual station.  

The little sat straddling the man’s lap, calming playing with his long black hair while he corrected the  assignments.   

Aizawa wouldn’t have pegged the boy to make such a quiet and clingy little but it did make a little sense, his childhood was loud, he wasn’t sho wn much physical love or attention, since his last year in middle school he has been traumatized twice by being held hostage by  villains.  

It all made sense for him to  b e  so  young in his head space.  

“Bunny do you want nom nom?” he looked down  at the boy who had taken off his hair  tie  and was gnawing on it, pacifier fallen from  his mouth hanging from a clip attached to his Onesies.   

Katsuki gave him a quick nod and childish grin, hair tie between his teeth.   

Aizawa hand slowly took the hair tie from the little’s mouth “Katsuki no, no  putting  hair ties in you r  mouth, its  icky  okay? I’ll make you some no nom  the little nodded and complied without any struggle, but the moment he tried to put the little on the  next  stool  so he could get up Katsuki gave out a loud  whine  and latched himself to the older man, refusing to let go.  

Tears had welled up in his red eyes as he buried his head into the pro hero’s chest, not wanting to let go “n-nu, nu” he  muttered, breaking his  silence  for a moment before going back into his  non -verbal state.  

“What is it baby? You don’t want me to put you down?” he asked with concern in his voice.  

Katsuki nodded at the reason and held on to the black shirt even tighter  

Aizawa pet the blond spiky hair of the boy to offer him some comfort “Baby I need you to sit on the chair for me, then I can make you some really yummy  nom  noms  okay? If you do that for me then I’ll put a small cookie on the side for you too okay?  he tried to bribe Katsuki whose grip slowly eased as he was put on the chair, his lips forming a pout “Good boy,  I’ll be quick okay?  

The little gave him a small nod and watched him pull out the extra little utensils from the cabinets and go to open  the fridge, pulling out some cut up fresh fruits for the star patterned bowl and  put 3 small sausages to boil on the stove with an egg seemingly aware that the little hadn’t had  dinner yet.  

Katsuki scooted off the stool and onto the floor, crawling around , following the man around the kitchen. He grabbed onto the leg on his pant and tugged for his attention, making Aizawa  look away from the sectioned plate with two ball shaped rice scoops on it “Yes  bunny what do you need?  he bent down and ruffled his hair.  

The blond boy put his hands together like he was holding a bottle making him understand that he needed water.  

Aizawa took the matching bottle and unscrewed the top giving it a quick wash and filling it with warm water and putting it together again to hand i t to the little “Here you go baby, he careful okay? Drink slowly” he went back to preparing the little Katsuki’s dinner.  

Katsuki put the nipple to his mouth and slowly sipped at the water it, watching Aizawa with curious eyes as he  put some ketchup over the small sausages and cut the egg down the center. He  put some yogurt next to the rice and placed the chocolate cookie  in the small empty section.  

“Come on Katsuki, time for nom  nom ” The pro hero picked up the boy and put him on the stool, soon joining him  with the plate and bowl.  

Katsuki wiggled on his seat happily as he pointed to the bowl of f ruits, clapping at it   

“Happy? You like fruits baby? Well, you can have all the fruits you want okay. But you need to eat  your  dinner firs t  he grinned at the boy whose smile dropped as soon as he heard that fruits would have to wait.  “Aw baby, no pouting okay? Do you want me to feed you?” he asked picking up the plastic spoon.  

Katsuki nodded excitedly and opened his mouth making little happy noises as Aizawa put in the first spoon of  all the food in it. He closed his mouth and slowly chewed on the food before opening it again.  

Katsuki ate the food absentmindedly, making happy sound  every now and then.  

The teacher watched the boy fondly, he couldn’t think of any moment where the boy wasn’t high strung or  had his face scrunched up from his overactive thoughts making him feel lesser than he was. He wished that he could see this version of Katsuki more ofte n.  

Calm  

Happy  

Willing to accept affection and help  

He couldn’t help but thing of all the times that Katsuki was in a near death experiences. It hasn’t even been that long since the war but Ka tsuki was back training even when doctors and teachers would chastise him for it.  

Aizawa was happy that Katsuki trusted him to reveal such a vulnerable side to him.  

Once the plate was empty of dinner Katsuki reached for the fruit bowl, feeding the pieces to himself with a wide smile on his fac e, occasionally wiggling when he  ate a piece of watermelon.  

Aizawa made a note to get more watermelons once they were back in season since it seemed to make the boy happier.  

“Here is your cookie little one, thank you for being so good for me okay?” he smiled at him.  

The little took the small cookie and broke it in half, shyly holding it out for the older man  

“For me? Thank  you, little hero, ” Aizawa took him up on the offer and  took a bite of it to satisfy the little who nibbled on the piece it finished.  

The teacher quickly washed all the dishes listening to the whines and whimpers that protested it “Baby I'll be right there okay?”  he dried them and put them back in the cabinet. He sat on his chair and pulled the boy on his lap again, having him straddle him with his face nu zzling his shoulder.  

He  glances  down to see the little with his pacifier in his mouth, bobbing away  rhythmically. His eyes dozing off till he could no longer hold them open.  

At least he could sleep peacefully in this state. The teacher was aware of the night terrors the boy had  on the  regular,  so he was just relieved that he dozed off without a problem.  

Aizawa put his hand over Katsuki’s diaper bottom and pat it, comforting the boy, making him only nuzzle him even more . He felt the temperature difference and huffed, smiling.  Initially  when  they  met,  he thought the blond was hiding a fever, forcing him into recovery girl’s room only to find that it went with quirk gen etics  making him run on a higher temperature than most. Like a warm kotatsu.  

He finished grading the last of the  papers he felt the cotton padding start to feel warm and heavy. The silence was broken with a mysterious hissing sound  that made the man look around for the source of noise before he realized that the sleeping Katsuki on his chest had made use of the diaper he  had put on himself before going into little space.  

“Oh shit”  he muttered and shifted the sleeping boy in his arms and walking into his dorm room to change him.  

Katsuki whimpered and  turned in his arms as Aizawa set him down on the toweled ground  

“I’m sorry baby, I’m sorry, I promise to be quick okay? ” he p ulled on the rocket patterned onesie and undid the diaper, discarding  it in the  plastic  bag.  

Katsuki started to stir awake , a sob rocking his body while Aizawa shushed him and cleaned  him up and put him in a fresh diaper   

“Hey  hey , come on little one  don’t  cry  okay?  Don't  cry, there  is nothing to cry   about baby.  he told time in a soft voice, holding him in his arms to pet his  ashen blond hair. Katsuki’s wails calmed but his tears continued to  flow down his cheeks. His tearful eyes looked  up at the pro hero who put the pacifier back in his mouth  

The boy tugged on the man’s long black hair “A- ada ” he uttered , spitting the pacifier back out, nuzzling at the man’s chest.  

Aizawa got up with Katsuki and put him on the bed “There you go little one, you’re sleepy so I need you to go night  night   okay?  Go nigh night  

“Aa!” Katsuki stopped his attempt to get away with his  strong  grip  on the black locks  

“Okay baby, I'll stay with you” he got under the blanket and pulled the little into his arms. Ka tsuki cooed and finally put the pacifier back in his mouth  and closed his eyes, drifting off the sleep without a second to spare.  

Aizawa got comfortable in the bed and continued petting the soft hair on the little’s head. He could get used to it.  S o could  K atsuki, he need ed this to cope with all the things that were done to him, he needed to feel like child , to feel safe.  

Aizawa w ill make sure of it.  

 

Notes:

Thank you for reading it, I hope you liked it!
Feel free to comment and leave a Kudo, it does wonders for my motivation
Also leave any recommendations you have down in the comments and I'll get to it!

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