Yeah... he said something about having a few forms? That you were the only one who could see him the first time. And after getting his second form for a while, that he remembered he was meant to bring suffering to the people around him.

[Izuku frowns slightly.] I still don't...understand what exactly Mochizuki-kun meant by that, but I know that he was happy that he'd gotten to share those few months at school with you and your friends.