After he's murdered by a serial killer, Ayumu is resurrected as a zombie by a cute powerful necromancer he had befriended. Eucliwood refuses to speak and even moves into his house. Then he meets a magical girl in a pink dress, named Haruna, who uses a chainsaw to destroy demons, but instead of her erasing his memory, he somehow absorbs her powers. She decides to also stay at his house until she regains her powers, and she forces him to take over her demon-hunting job.
