Devil Returns to School Days

Devil Returns To School Days, 악의 등교

Good grades, a handsome appearance, above-average fighting skills, and a little bit of righteousness.
On the eve of his graduation, Kim Hyun-sung gets pushed off a rooftop ends up in a vegetative state.
Unable to die, with only his hearing and consciousness alive, he spends the next ten years in hell until he suddenly returns to the day the bullying began.