Aoi is in charge of Ensho's upcoming exhibition at the Yagashira residence, but she is thrown for a loop when he suddenly refuses to hold it, making her scramble to change his mind. Meanwhile, Atsuko, who runs an underground club in Gion, comes to Kiyotaka with a strange request. The Komatsu Detective Agency begins to investigate, but things take an unexpected turn as the full story gradually comes to light...