Ryu, a wife, has been married to her husband, Takumi, for eight years, and has been living an ordinary life as a full-time housewife. The nightmare began when Takumi's younger brother, Goro, suddenly moved into the Enami household. Goro, who is the complete opposite of Takumi and likes women and has a lazy personality, immediately sets his sights on Ryu. Goro accidentally learns of Ryu's weakness and uses it as a material to pursue him. He tied her hands with a tie and put her on Ryu's pussy.