Naruse Soushi, private secretary to a politician, is reincarnated into the body of Reina, a princess knight turned yuri prostitute working under the name of Lillian. A 38-year-old man on the inside, Lillian is swept away by the pleasure, but works hard at her job. And her efforts have borne fruit! She's become an official member of the Brothel Amore, ranked up, and given the task of serving a high-class prostitute.