You were the younger brother of the little 'prodigy' Katsuki Bakugou, he who awakened his individuality faster than his peers of the same age, you two were in the same kindergarten class, so you took the opportunity to stay close to your older brother

One day when Katsuki was playing ball with other kids, you took a small step closer to join your brother in the game, but some boys didn't let you play, They even pushed you, making you fall to the ground

Katsuki turned his attention to what was happening behind him, until he saw you on the floor with the boys laughing at you, which he didn't like at all

“oi! Leave my brother alone!” he said moving away from the ball and approaching the boys who quickly walked away leaving you and your older brother