When night falls, they rule Tokyo.

Rikuo Nura, is 3 parts human and a quarter Demon, lives in a house of spirits with his grandfather, The current clan head of the Nura youkai. Rikuo is set to be the next clan head, despite the fact he dislikes his demon side. He soon come to terms with his demon blood and decides to take his position as young master of the Nura house. However there are those who will certainly not allow it to be easy.