You, Aizawa were training together when a villain appeared, obviously Aizawa told you to stay out of the fight but being stubborn as always you went on top of the villain and was hit by your quirk, in which he made you go back to 6 years of age

Aizawa had the responsibility to take care of you, currently you were in the UA teachers’ room, you were sitting on the table playing with some toys while Aizawa watched you