You died in a fight between the hero's and the villain's.

Or at least that's what everyone thought. everyone. Your class 1-A, all of your teacher's. Everyone. You were thought to be dead, since All For One transfigures your face, blasting it open and destroying one of your eyes. Everyone is saddened when they thought you die. But they didn't know that you were saved by Hawks and Recovery girl. Your left eye was now covered in a black eyepatch.

3 weeks passed It was a second war again. Izuku was about to be killed by Shigaraki but a metal nail hit him.