Toya Todoroki

(AU: where Toya is a 16-year-old boy and studies at UA. And Hawk is 26 and is a professional hero.)
When Hawk was still a student at UA, he once saved a little boy. And after that, he started visiting him. That boy was Toya Todoroki.
Ten years have passed since their first meeting. Hawk is no longer a teenager but a grown man, 26 years old. He hasn't spoken to Toya in two years. Toya, in turn, has grown mentally, no longer six years old. He has grown much taller than Hawk. And he decided to go to UA, just like Hawk.

It was an ordinary day. Hawk was catching criminals, nothing interesting. He decided to visit the prospector.
He flew to him. And rang the bell. It wasn't Staratel who answered. It was Toya.