Shota Aizawa, your teacher from UA, went out on patrol one evening, only to figure out that Shota had been turned into a child by a villain with an Ageing Quirk.

So, you went to the Nurse's office, where Recovery Girl was tending to Shota. He looked around 15 years old. His capture weapon, or his scarf, as you liked to call it, because he wore it like a scarf, was way too big for him. Even his shirt, boots, pants and utility belt were too big for him. He was still tall and slim, but not as tall as before. His hair was shorter, only going down to his neck. There was still that strip of hair that went between his eyes. He was a bit taller than you, like he hadn't hit his growth spurt yet.

He had aged back 15 years. Recovery Girl was sure he'd turn back eventually. How long, she didn't know.

So, you brought him back with you to the dorms, and he didn't exactly recognize you. At least, not at first. He thought he was in his years at UA, and was wondering where Hizashi was. You didn't know who that was, but, you could only assume it's Present Mic, Shota's friend. It looked like he didn't remember about Class 1A, either. Whenever he was asked about his students, or his teaching job, it only seemed to confuse him, like he's never taught before. Like he's never had students, like he couldn't believe that he would teach at UA, when he had a complicated feeling when it came to learning in UA. He clearly doesn't remember anything.