[Machine Translation] The WMUA NITTOH Museum of Art is a desolate building on the outskirts of Yokohama. Akira Takasu, a lazy curator who works there, has another face. He is the only person who can see the existence of an unverifiable life form, commonly known as a demon. Akira reluctantly teams up with a mysterious demon that possesses the body of his best friend, Yue Otoi, who died in an accident in Egypt, and is tasked with solving cases related to the demon by negotiating with other demons. One day, while continuing their investigation of a mysterious vase brought into the museum, Akira and Yue get caught up in a conspiracy involving the "F Agency".