Chapter Text
Aizawa knew something was up, he always could tell when his students were having a bad day. But this was one of the first times he's noticed Iida having a bad day, excluding the Hosu Incident. Iida was constantly shifting and seemed to have trouble concentrating on the lesson. He saw Midoryia give him concerned glances, along with Uraraka and Yayorozu. Iida, however, seemed oblivious to the concerned looks of his friends, instead he stared at the board, although he didn't follow any of the instructions listed on it. Homeroom continued and as class progressed, more and more students began to notice Iida's strange behaviour. Eventually, the bell rang, and as students filed out, he called out to Iida.
"Iida," He called, "Stay after class." Iida tensed but stayed in his desk while his friends gave him worried looks as they passed by.
"Yes, Aizawa-Sensei?" Aizawa winced at the boy's voice, it was hoarse, much like Iida had been screaming, or crying, for hours.
"Your performance in class today had me worried, care to explain whats going on?" Aizawa asked gruffly. Iida tensed up again, before starting to sputter out apologies.
"I- I'm very sorry Aizawa-Sensei! I promise to be more attentive!" Iida spat out quickly, dropping into a deep bow in apology.
"Stand up, kid." Iida complied but refused to look his teacher in the eye. "You still haven't answered my question, what's going on?" Iida sighed, a contemplative look on his face before he blushed. Iida muttered something that Aizawa couldn't hear, his face getting even redder.
"What was that?" Aizawa asked patiently, Iida had, unsurprisingly, been quite easy to get to talk, so there was no need to snap at him.
"I-... Ihaven'tbeenabletogetinto..." Iida trailed off after he replied in a very fast tone. Aizawa looked at the kid, Iida was sweating, and his face was bright red. He watched as the kid tried to maintain a steady breathing rhythm.
"Tenya," Aizawa started, "I want you to take a deep breath then slowly, slowly, tell me what you said." Aizawa was trying to stay patient with the kid, because clearly, this was something that meant a lot to Tenya, so it meant a lot to Aizawa too. Tenya inhaled deeply, before closing his eyes for a brief second, and still avoiding eye-contact with his teacher, stated,
"I haven't b-been able- to s-slip into my h-head- headspace." Tenya finished quietly, tears, began to silently fall from his eyes, trailing down his cheeks. Aizawa looked at him confused and concerned. Headspace? What Headspace? Moreover, Tenya was crying, crying!
"Hey, Tenya?" The young boy looked at him, was it just Aizawa or did he look younger? "Did Tensei ever tell you about the time he almost got Me, Present Mic and himself killed?" Tenya looked at him incredulously for a moment, before shaking his head.
"Well... Mic and I were over as Tensei's house, and he wanted to race us. Everyone knew he was going to win (Because of his quirk), so he tried to give himself a disadvantage, he put wood over one of his engine thrusters. Wood!" Aizawa exaggerated, grinning when Tenya giggled, it was short but the most innocent thing he'd ever heard.
" Now everyone knows wood is flammable, but Tensei was just being an idiot. So, he put wood over one of his thrusters, and we all lined up, ready to race across the yard. Tensei activated his quirk and bam! The wood catches on fire, however, it put Tensei off balance." Aizawa paused for a second.
"And he ran straight into Mic, who in turn tumbled onto me. And this wood is still on fire! So now the grass is catching fire and Tensei is freaking out, cause his parents are going to kill us, and Mic and I are freaking out because the grass is on fire, and well, your parents came home, saw the fire, and called the fire department. Your brother got a tongue lashing worth a million dollars, although Mic and I weren't much better off, your parents nearly killed us!"
Tenya giggle again, this time though, Aizawa noticed that Tenya seemed very relaxed.
"That was funny!" Tenya giggled, although his voice sounded off, it was very childish and high pitched. Aizawa was confused, why was Tenya talking like this? "Can you tell 'nother one?" Tenya asked, but his sentence again was off. It wasn't grammatically correct, which was much unlike the Tenya he was used too.
"Sorry bud, maybe another time," Aizawa told him, the childish term slipping of his tong, he briefly wondered if Tenya would reprimand him for such an endearment but instead the kid just smiled at him and nodded.
"Umm- excuse me, sir," Tenya asked in a small voice.
"Yes, what is it?" Aizawa replied, still trying to figure out what was wrong with his student.
"I- I need the bathroom!" Tenya panicked! He needed to use the bathroom, and- and he didn't want to use his "Protection,".
"Well- just go then?" Aizawa replied confused, Tenya was a teenager, so why was he saying it so bluntly.
"O-okay-, oh, um, n-never mind!" Tenya didn't want to use his protection! He just couldn't hold it anymore. He felt his protection swell beneath him, as a puddle o urine formed at his bottom, before getting absorbed.
Aizawa, on the other hand, was very confused. Just a second ago the kid had been practically wetting himself, and then suddenly he was fine? Something really strange was going on here!
"Tenya, I need to take you to recovery girl-" Aizawa began to say, only to be cut off by Tenya.
"No! No doctor! Please! I'll be good I promise!" The young teen ranted, eyes widening in panic.
"Hey- It's okay bud- Come on, let's go take a walk?" Aizawa tried, nodding to himself when the teen hopped up and grabbed his hand. He felt somewhat bad about tricking the kid when he was in a vulnerable state, but he needed to know what was going on.
"Hey, Tenya? What's the date today?" Aizawa needed to know if the kid had some sort of memory loss.
"The 19th of October, 2019." Tenya prattled off.
"How old are you?" Aizawa asked, shocked at the kid's answer.
"6!" The kid told him happily, grinning at his teacher. Aizawa was floored Tenya had some sort of memory loss, the kid was 15, not 6! Aizawa also noticed that the kid was walking strangely, his leg's were awkwardly spread apart, and he was somewhat waddling.
"Hey, kid? Are-" Aizawa paused, he had only ever asked a student this once before, and it was extremely awkward to ask a 15-year-old, "Are you wearing- a- umm- a diaper?" Aizawa finished it off quietly, watching as the kid's face grew horrified and bright red.
"I'm Sorry! I- I didn't put it on I don't know, I-" The kid started to hyperventilate.
"Hey calm down kid, it's alright, I don't mind," Aizawa stated, watching as the kid calmed down. Despite his kind words Aizawa was somewhat shocked at the revelation, this meant Tenya had been wearing it all day, throughout homeroom, and he didn't notice.
Finally, they arrived at Recovery Girl's office. Aizawa opened the door and quickly shuffled Tenya through it. He called for Recovery Girl, who shuffled out of her office.
"What is it Aizawa? Another student broke their bones?"
"No time for jokes, there is something wrong with Iida. I think it's some sort of amnesia? I don't know though- He said that he's 6 years old!" Recovery Girl turned to look at the young teen, she checked for dilated pupils, his pulse and other medical things that Aizawa didn't pay attention too. He did listen to their conversation though.
"What's your name?"
"Iida Tenya,"
"How old are you?"
"Six! I'ma big kid now!"
"What's the date today?"
"'tober 19th, 2019."
"Where are you?"
"I don' know? Where am I?"
Recovery Girl turned to look at Aizawa, leaving the kid to contemplate what was going on.
"Oh- Yeah, I forgot to mention he's also wearing diapers. I'm not sure why, and he's been wearing them since homeroom, maybe even before..."
"Oh that's alright Aizawa, not the first time a student has worn diapers to school, did you ask him why?"
" He said he didn't know why.." Aizawa paused to contemplate why he didn't press Tenya further.
"Has it been used?" Aizawa was quite shocked at the blunt question, before making an, "I don't know," gesture. Recovery Girl walked over to Tenya before saying something quietly, Tenya blushed and nodded his head. Recovery asked him something as and Tenya nodded again. Aizawa watched as Recovery Girl lay Tenya down, stripped him of his pants, and a used diaper, before wiping his privates and diapering him again.
"W-what?!" Aizawa sputtered, unbelievably confused. Recovery Girl patted Tenya on the head before walking back towards Aizawa.
"Tell me Aizawa, have you ever heard of age-regression?" Aizawa gave her a confused look, "It's when a person, young or old, mentally regresses to an age where things were simpler. Many of the cases I've seen in students it's due to stress. Iida here is an age-regressor, however as I've learned, many also call it being a little, or have a little space, or younger headspace." Aizawa was floored, Tenya, one of his students, was a little, or age-regressor, or something else. Aizawa was confused, of course, he'd heard of quirks making people physically younger, but never heard of people doing it mentally, and on their own will.
"So, he mentally regresses, and then what?"
"Well, typically the person stays in little-space for an undetermined amount of time before going back into big-space, or their normal head-space." Recovery Girl explained, "Most little's have a caregiver, someone who watches them and care's for them while they're in their headspace, typically it's someone their very close with." Aizawa needed to do more research on this, he checked his phone, God, school was halfway over, lunch was soon.
"What should I do with Tenya until school is over? How long will he be '6' for?" Aizawa asked, could he send Tenya back to the dorms? But no one was there, and if recovery girl was right, then Tenya would probably make some very poor choices, after all, he was six.
"Well, I would suggest that you explained the situation to the staff, and then take a break, watch over Iida at the dorms and when he comes out of headspace, you can probably leave him alone."
"Probably?"
"He will probably be awfully embarrassed that you saw him like this, most people don't like talking about it, so you should probably give him some reassurance that you don't mind."
"Okay- Okay." Aizawa took a deep breath, nodded at Tenya to come over, and they walked out of Recovery Girls office together.