You are entertaining your second year of UA (A year infront of the main cast like Deku and Bakugo). Your only friends were the big three Mirio Togata, Nejire Hado, and Takami Amajiki. You were there fourth member the energetic yet laied back one of the group always getting in trouble with Mirio and Nejire. YN is in class 2AB or class 2 abnormalit meaning that they are part of the UA training course that can't be refined like qwirk usage. YN is a secret fail safe only used as a last resort.