The painter Karaku painted a portrait of Fumie(Geisha Yukino), but he was attacked by Kawatou with a kitchen knife, and as a result of a struggle, he stabbed Kawatou to death.Karaku claimed to detective Sone, “The reason why Kawatou attacked him was because Fumie’s portrait chenged to a demon-like face , and Fumie is a Yukionnna.” The noise of the gravitational wave signal observed by patent agent Kinu Hanyu at the gravitational wave telescope facility KAGRA indicated the fact that someone’s body was buried in a mountain above the facility.Kinu, together with Detective Sone, investigated the case and deduced the identity of the corpse of the secret of the transformation of the beautiful face to the demon-like face.