Soulless

Izuku is a curious person. The will to learn and question is the motivation that drives him.
At the early age of 4 he had learnt that not all men are equal, not when it comes to having a quirk.
At the age of 5 he had learnt that the dead are much better off than the living.
At the age of 6 he had learnt that the law of the universe is a life for a life in exchange for your soul.
The age of 7, he was first told he was insane. And maybe he really is insane, maybe all the bad things that happen in his life are deserved.

Its at the age of 8 that he first witnesses the death of a human and the rise of their soul.

Its at the age of 11 that he realises he killed her. He killed his mother.

Or, Izuku wakes up one day and finds out he can see ghosts. He wakes up another day and realises he can shove a soul into a body. Wakes up a third day, much to his displeasure and realises he's immortal.

Tw: Quite a lot of animal death and harm. Same with humans I guess. It's all just quite dark in general so keep that in mind while reading.

Cover not mine.