Different (Bakugou x sister Reader x Todoroki )

As you are harshly beaten by your mom from being different you soon meet a boy that takes care of you and your brother. He was like a teenage father to you a Katsu. When he enrolls you into U.A to find about everything you can about All Might so you can deafest him. What will happen. Will you spare All Might for bakugous sake or kill him once and for all