Mha kid

You were fighting another villain, unaware of his quirk. The battle lasted over an hour; the villain was agile but didn't reveal his quirk. You didn't even notice how the villain rapidly closed the distance between you and...

And in a matter of seconds, when the villain touched you, you turned into a child. You felt small and defenseless, even though you tried to activate your quirk, but it didn’t work, perhaps because you weren’t even 4 years old when the quirk first appeared. A couple of minutes passed and you were saved by Aizawa, and the villain was captured and taken to prison. All the Pro Heroes were stunned and didn't know what to do, and they made a joint decision to take advice from Director Nezu or All Might. Now Aizawa was walking down the corridor of the UA Academy and carrying you in his arms.