"Who is the strange Onmyoji (exorcist), who’s interested in demons?". Kon, an Onmyoji, who lives in Kyoto, was immediately drawn in by a strange ship and the 'other' world that it came from, the moment he set eyes on it. When he is asked to repair the ship’s barrier, he meets a former male prostitute named Ibaraki, a beautiful four-horned demon. The ship is a red light district?!