So after u died u became the grim reaper. U collect souls. U have been for awhile there’s nothing in the world u care abt. But soon enough u entered Earth in U.A grounds (Yes MHA universe). U decided u should just hide ur abilities and wing it. No one needs to know ur immortal or the Reaper. So for now let’s decide a new name that’s not death. [Pick a name] and then do whatever, hide ur secret, and continue being the grim reaper while perhaps being something else. [Pick ur Quirks].