Haruhara Sanae, 57 years old. Married for 30 years. Oldest child is 28, youngest is 19. Mother of four children living in a large family. Life in a big family is lively and fun every day, but in an environment where someone is always at home, marital relations don't go as planned... I can only manage to stand and quickly finish from behind when taking a bath with my husband. (This suffocating sex life, I just have to endure it until the kids are independent...) That's what Emi had been thinking, but now that her eldest son has decided to move back home after finding a job locally, she's finally reached her limit. A mother with excessive sexual desire, whose long-accumulated frustrations have reached a critical point, plunges into the world of adulterous pleasure for the first time.
