The cat is in the closed box, with a 50% chance of being alive and a 50% chance of being dead. According to the principle of uncertainty in quantum physics, he is alive and dead until someone opens the box. Izuku doesn't want to open the box. OR Izuku didn't return home after school. Two months later he was found roaming a deserted road with white hair, psychogenic amnesia and a quirk out of control. Nothing is the same after that. [This is a translation of my own fanfic, O Gato de Schrödinger.]