Genmukan: Aiyoku to Ryoujoku no Inzai

Detective Kido Satoru, a man of modest skill, accepts a straightforward assignment to locate a missing ruby ring after receiving an anonymous letter containing a ticket. He travels to a remote mansion inhabited by a young mistress, an elderly butler, a beautiful teacher, a lovely maid, and an unsightly manservant. As he begins his investigation, Satoru finds himself drawn into a disturbing scene of raw desire and humiliation.