Naoko Kitamura is a demon hybrid, a descendant of a secret union between an ancient female demon and a noble sixteen-century samurai.

Two humans, from different places and times, find themselves together in the cave of an unlikely pink bear.

Unless you are you and he is he, you will take your brother’s life and live, the Fortuneteller says, or you spare him and die.

The magics holding the barrier between the dimensions has been deteriorating ever since.