Prologue

Deku/Izuku what if story.

What if Izuku is rised by Lord Muzan. Izuku is found as a baby by the evil Demon Muzan, but instead of crying in fear of the Demon. He giggles and smiles at him. Muzan felt something he never felt towards any human before, but Izuku wasn't an ordinary human. Izuku's only ⅔ Human and is ⅓ Demon. He is immortal. Immune to the sun, Demon killing poisons, Demon killing flowers, and Demon killing blades.

Can Izuku change the evil heart of Lord Muzan? Will Izuku become an evil Demon like his adoptive father or will he change how demons and Demon Slayers see things?

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I don't own MHA or KNY or any of the characters. I only own the way I tell this fanfic.