For generations, it has been customary for a woman to serve as the head of the family. Like the praying mantis, the male is used only at the time of fertilization, and then disposed of. Therefore, the sadistic lesbian temperament has been amplified to the limit. The owner's flower and his beloved daughter Minori who own a huge asset and live an elegant life. The next prey for the distorted sexual desire inherited in the bloodline for a long time is Miyuki, an old friend of Misato, who is from an orphanage.