Chapter Text
The day had started pretty much normally. Some were out at their part-time jobs, others were taking extra classes for their majors, and another portion of the students was either training or spending time doing some of their hobbies. That's why, when they all came back together shortly after 4 pm, none expected something out of the ordinary to happen.
Everyone was now looking at Shouto, some in concern, and others in a stupor.
More specifically, a child version of Shouto that sat between Aizawa and Recovery Girl. Aizawa explained what happened, telling his former students that Shouto was supposed to help out some of his students in training, however, a villain wannabe attacked him right in front of the gates, their quirk hitting him right in the face and turning him into a child. Recovery Girl reassured them that the effect will wear off in a week.
“What should we do now that Todoroki is a kid?” Midoriya asked while eyeing his friend.
“He hasn’t spoken yet. We don’t know if even his mindset has reverted into that of a kid. So until he says something we cannot think of a plan.” Aizawa said looking thoughtfully at the kid next to him.
Shouto’s eyes shone at the information. Till now he hadn’t uttered a word too ashamed of being in that childish form in front of you, but now, thanks to the new information that his former teacher just gave him, his mind thought of a plan.
Shouto had the longest crush on you: firstly noticing the personality traits that you and his mom shared, and then your body just added to make him hot and bothered every time he thought of you. He has been having the hots for you since high school when your school tagged along his for a joint training camp experience. He thought it was going to be a quick, superficial crush, but oh boy, did it grow with the years.
This was a one-time chance for Shouto to get closer to you, and he will not let that chance slip through his fingers. Mustering the best cute and needy expression of a child, he got off the couch, walked toward you, and stopped in front of your legs, lifting his arms.
“Mommy!” he said. Surely his cheeks were bright red, burning up due to the embarrassment he felt, but this alone would let the others think that he got totally turned into a kid, and if everything went accordingly to his plan, Recovery Girl and Aizawa will give you the task to take care of him.
His friends widened their eyes and stared at the chibi version of him. Shouto took notice of the red dust that covered your cheeks and was internally proud of himself.
“It looks like even his mind was reverted back.” Mumbled Aizawa looking at you expectantly. Shouto, noticing that you weren’t taking him into your arms he took your shirt and tugged you downwards.
“Mommy!” he half-shouted hoping that you will get the hint and finally let him rest in your arms. You gulped and lifted him on your thighs, while Shouto hugged you with his short arms and nestled his head into your chest, sighing satisfied at the situation.
“Y/n, you will take care of Shouto for the entire week. It seems that he thinks of you as his mother, maybe something about personality resemblance or aspect, I’m not really sure since I never met her. But he seems much more comfortable with you, so you are in charge of making sure that Shouto is taken care of. We will not tell his family about that, Endeavor will get mad, and honestly, I don’t have the time nor the patience to deal with him. Got it Y/n?” Aizawa asked looking at you.
“Got it!” Aizawa and Recovery Girl left the common room to inform the director, and the professors in charge of you, of the current situation. While you looked with curiosity at Shouto, the background noise that was Mineta began shooting daggers at him, the volume of his mumbling gradually increasing.
“IT’S NOT RIGHT! I’M A KID TOO! Y/N LET ME REST BETWEEN YOUR TITS TOO!” the purple insect shouted launching himself at you. Before you could punch him, Shouto had already turned him into an ice cube. You let out a sigh, still having to get used to... whatever that thing was.
“Touch her again and I’ll kill you!” he threatened with the cutest, childish voice. You looked at Shouto in awe, gushing over how adorable his pout was. The rest of the girls tried to cuddle and play with Shouto, telling him that he did a good job at protecting you, but he wasn’t listening to them, too focused on trying to leave small kisses on your jaw. Now that everyone thought of him as a kid, he was free to shower you with all the love he wanted, without passing as a pervert.
Remembering that you still had your presentation for one of your exams to do, you got up and decided that it was best to go to your room. Keeping Shouto in your arms, you excused yourself and went toward your room. During the walk, Shouto kept rubbing his nose into the juncture of your neck while his hand clutched your shirt. The smile that appeared on his face threatened to stay there for the rest of the week.
Once you reached the door you were quick to open it, letting out a puff as you put Shouto on the bed to take out your textbooks and notebooks. Shouto focused his gaze on you, slightly upset that he wasn’t in your arms anymore.
“Now, be a good boy and wait till I’m done with my presentation, then we can play something together!” you said, flashing him a sweet smile.
Shouto’s cheeks flared up, and suddenly he remembered one of his wet dreams where you would be on top of him, praising him for how good he was making you feel. Shouto came, a long time ago, to the conclusion that he was a closet pervert, and he was doing literally nothing to deny this fact about himself. But it didn't mean he was willing to reveal his thoughts to you anytime soon.
After five minutes he got bored of waiting and hopped off the bed. Walking toward you, he climbed on your lap and rested his head on your chest. Looking up at you he noticed the smile that was on your lips and he smiled back. You patted his head with your free hand while the other kept writing.
And that’s how Shouto fell asleep on your lap, with you cuddling him and your heartbeats lulling him into a peaceful slumber.
Shouto was woken up by a soft tug. Slowly, opening his eyes, the first thing he noticed was your smile. Groggily, he put his small hands on your cheeks and lightly kissed your nose. You squealed in delight at his cuteness.
Shouto thought he was on cloud nine, you were kissing him all over his face, and his heart was beating like crazy, threatening to burst out.
“Shower time baby boy!” you said, taking him into your arms and marching toward the bathroom. Shouto widened his eyes in horror. This wasn’t supposed to happen! You are not supposed to see him naked in this childish form!
He noticed that you already prepared the bath and tried to wiggle out of your grasp, but you kept him firmly against your chest, arms tightening around his small body. Shouto looked at you, eyes widening in horror while you just looked at him with curious eyes.
“Sweetie, what’s wrong?” you asked patting his head, trying to understand why he had small tears at the corner of his eyes. Thinking that he was afraid of bathing alone you smiled at him. But that wasn't at all his main concern. The problem was that you... you were going to see him naked? In that small, chubby body. That was bad. Yes, it was a golden opportunity to spend time with you, but if this experience deleted your views of him as a man it will be bad. All his efforts then will be obliterated.
“Would you like me to give you some privacy?” you asked leaving a small peck on the top of his head.
Shouto’s whines stopped, while his cheeks burned up at your words. His face was now as red as his left side, and his heart was going wild. He gave you a shy nod, and you turned around as he began to shed his clothes quickly and hopped into the tub.
"You can turn around" he mumbled. You moved to the small cabinet and took out a new sponge to throw him. After coating the flat part of the sponge with soap, you began cleaning him, starting with his arms and neck. After some minutes of him being still, you decided to take a look at his face. Usually, children would splash water everywhere, blowing bubbles all over the bathroom and overall creating a mess for adults to clean up. You have experience enough experience taking care of your younger sibling to know just how messy little gremlins can be. But Shouto was awfully chill. That was nice.
Flashing him a sweet smile, you quickly finished scrubbing his body and then moved to his hair.
As minutes passed, Shouto relaxed against the tub, enjoying the scalp massage. Who knew having someone wash your hair could be so soothing? Maybe, after getting back to his adult self you could do this again, of course, he will as well.
After making sure he got out of the bath safely, you went to Momo’s room to ask her to make some clothes for Todoroki while the latter dried off.
As days passed, everyone understood to not touch you while Shouto was around, and that was 24/7. Kaminari and Mineta avoided you like plague and stopped making remarks about your ass or chest, trying to not piss off the kid version of their friend. Everyone came to the conclusion that Shouto as a kid has no chill, and was ready to freeze and roast alive every single human that tried making skin contact with you.
Truth be told, Shouto never knew that Kaminari and Mineta were so disgustingly clingy toward their female classmates, and that was partially his fault for not noticing earlier. Before turning into a kid, and before spending so much time with you, he never really paid attention to those two, and he surely didn’t know how much trouble they were making you go through.
While Mineta was fuming with rage at the fact that Shouto was having the time of his life surrounded by hot girls and receiving cuddles and attention from each of them, the child turned around, taking notice that his purple classmate was currently shooting daggers at him, again.
Shouto, just to make the point clear that you were his, plopped on your lap, hugging you tight -even if your frame was way too big for his small arms- and looked at Mineta with a smirk on his round face. The girls gushed over how adorable Todoroki was while Mineta’s and Kaminari’s souls left their bodies.
“I think it’s time to go to sleep!” You said trying to conceal a yawn, oblivious to what was happening between the child that was in your arms and your fellow classmates. You quickly said ‘goodnight’ to your friends and moved to your room, Shouto still in your arms while he had his small ones wrapped around your neck, placing small kisses under your ear, making you giggle at the feeling.
“You want to watch a movie?” you asked him while ruffling a bit his hair. Shouto looked at you thinking about the offer, then nodded his head.
“Can we watch Avengers?” he asked, eyes wide while a small smile played on his lips. You smiled back at him and nodded, taking your laptop and putting on the movie.
“Everything you want sweetheart!” you hummed. After starting the movie you moved toward the door that was left open and closed it. Then, you placed Shouto on your bed, in front of the screen, as you began to take off your uniform cravat and shirt. Sitting on the bed to take off your shoes you quickly glanced at Shouto.
“Aren’t you going to change?” you asked while placing the shoes on the shoe rack. Shouto nodded absentmindedly, putting his nightwear on before laying his head on the strawberry-shaped pillow. Shouto at this point wanted nothing more than have back his adult body. As much as he liked spending time with you like this, he wished more to be able and court you properly.
Halfway through the movie, both of you fell asleep, with Shouto nestled into your chest and your arms securely around his little body.