Karasuma Kaei is the only son of the Karasuma family. After his father and the butler who had been taking care of the household for as long as he can remember vanish without a word one day, it falls to him to deal with the main house, its new butler, and the myriad problems that accompany them.

Atori and Ruu live at a shrine abandoned by its deity. Ruu can see the chains of attachment that ties a person down, and Atori can cut that chain.

During their school days, Rin and Karaku were a detective duo of sorts. One day they meet again as adults, and indulge in a stroll down memory lane together. But what one of them doesn't know is that he is already dead, wandering the earth as a ghost...