The Unlikely Todoroki

At first Enji was indifferent to the unexpected green baby. Too busy training his own chosen child to succeed him. Then years went by, he grown fond of the child. Especially, for his contagious smile. Unfortunately, the boy brought in his own problems: the fact that he was quirkless, gets in gets into trouble and attracts the strangest people... At least he's cute. (baby swap AU)