This world that we live in is a very mysterious yet dangerous place. Here, werewolves, fairies, sirens and many other supernatural beings live alongside humans. Izuku is a quirkless orphan who grew up with the priest of the temple he was left at. Once discovering that he has no quirk, Izuku trains in using Omnyōdō Style magic. However, darkness is coming. And it's coming in a worse shape or form than All for One. But somehow Izuku has a connection this darkness. Will he choose his light? Will he choose his dark? Or will he merge them, hoping to create a special sign of peace?