The story follows young Ririchiyo Shirakiin, an independent and outspoken heiress who wants to go live on her own. His half-yokai parents allow him as long as he resides in the Maison de Shirakiin, where only people of yokai descent can live accompanied by an agent from their own Secret Service. Although the rebellious Ririchiyo rejects the idea of ​​continuing in anyone's care, she begins to change her mind when she learns that the agent responsible for her is Soshi Miketsukami, someone she had known by another name for a long time...Thus begins this story of supernatural conspiracies, outrageous massacres, and reincarnations that will cost the motley supernatural cast more than one life. The story is perfectly divisible into three sagas, each one with its doses of epic, tragedy and fantasy.