A long time ago, a large spirit fox was worshiped as the patron saint of the Sanchui family. Its name is Kong Huan. Although it is good at various magics and smart, but because it likes to keep making trouble, it was finally sealed into the ancestral hall in the back mountain by the priest of the Sanchui family. Time passed, and in modern times, Tohru Takagami, the last descendant of the Mizui family, dreamed of a female monster. Toru's mother was the great shaman of the Mizui clan. She discovered the coming danger. In order to protect Tohru, Kong Huan became his 's patron saint was freed from its seal. However, the Kong Huan that was released was very different from the image of the legendary big spirit fox. It was a guy who usually rolled around at home and was even called "Little Kong" by Toru. When transformed into a human, Kong Huan will turn into a peerless beauty, and she can be interchangeable between men and women! ? And it is this kind of Sora, who uses his extraordinary ability to solve various incidents approaching Toru one by one. Since then, Sora and Toru, as well as Toru's brother Noboru and the guardian of the Mitsui family - Kurenai have been involved, and incredible... This is how the story begins.