Todoroki family story #1

At that time Toya was training with his father ( Enji/Endeavor ) at his house

Endeavor : Looking at Toya's hair What happened to your hair?

Toya : Huh? Confused

Endeavor : A strand of It turned white.

Because at that time Toya hair was still red

Toya : What? Am I turning into a old man?

Endeavor : Did you dye your hair?

Toya : I wouldn't do that. Forget about that. Teach me your ultimate move today!