A high school teacher, Rina, who has been married for 5 years, seemed to have a happy life on the surface, but in reality she was dissatisfied with her husband's sex with her and wanted to masturbate alone. Was met. One day, her sister, Aki, brought her fiancé. The other party was a student, Sumio, who was held by a new teacher, Rina, to be fucked in an empty classroom. Rina tries to avoid Sumio as much as possible, but he does not allow it, and opens the gap to reach Rina's body and asks for the old relationship. And while Rina is away from her husband, she goes crazy by her sister's fiance, becoming a lewd sister...
Ayaka, a former president's secretary, was married to her son Naoki and had a happy day. One day, when Shinsuke, the president and father of Naoki, was injured and was in need of nursing care, his feelings for Shinsuke who was sleeping inside her and Naoki began to shake. And nursing care will eventually be forbidden sexual care. Ayaka's older sister, Reiko, who lost her job due to the recession appeared there...
