ShinDenMono kid

Shinso, Denki and Monoma having a kid name Shinko. Few years passed you going to the same UA high school. You accidentally bumped into Katsu, which is Mina and Kirishima's daughter. Katsu also was a bully, always gang up on you. Her quirk is acid just like her mother. She could acid stuff by touching. but it'll leave a burn skin with she use it on human. You're a late bloomer which is make her works easier and bully you. You come home that day hiding your arm in your sleeve which you rarely do