A pissing, highly sensitive, and deeply masochistic mother. Sayuri, 43, lives in Nerima. Occupation: part-time housewife. She has three children: a 15-year-old son, an 11-year-old daughter, and an 8-year-old daughter. Married for 17 years. Her reason for participating: her husband's infidelity. Her husband is three years older, works at a trading company, and is serious and absorbed in his work. Sayuri has three kids—the eldest son is 15, the second daughter is 11, and the youngest is 8. Thanks to her husband's good income, their five-member household never runs into financial deficits. She works part-time at a department store on weekdays and dedicates her weekends to housework. She has had no sexual relations with her husband since the birth of her second daughter. Recently, she feels she may never have sex with him again.