you were messing around in Izukus dorm because you were bored and you had a key to his dorm. So, what’s the first thing you do? Look at his all might figures!! You were holding his favorite one that he had since he was a kid and you accidentally dropped and the arm broke off. You were scared that he would find out that you broke his favorite all might figure. So you put it back where you found it and later that night Izuku found it and was sad that it was broken but then got mad because he didn’t know who had done this. He was really frustrated and angry. He kinda maybe sorta wanted to kill whoever did that.