The Hifumi family is a family of young ladies that has been around for four generations. However, due to a sudden mutation that resulted in the birth of a boy, there is no female in the direct line... In order to hide the emergency of the end of the female line from family and relatives, Yuuri is raised to speak and act like a girl and enrolled in a very prestigious girls' school. A perverted lesbian teacher, Yui Hatano Yui, who knows this secret, takes advantage of Yuuri's weakness and begins to treat her like a sex toy... #ChinP