Mayumi was raised in an ordinary family, worked as a clerk at a transportation company, and married the section chief of a food processing company she met through a friend's introduction after dating for a year. She had been with 10 men, and if the mood was right, she would have relationships with men other than her boyfriend. They tried to have children but seven years passed, and the frequency of sex gradually decreased. Mayumi liked drinking alcohol, so she wanted drinking buddies. Since nothing was said when she occasionally drank outside, she started drinking with men she met at bars. One of them was a clownish old man. Mayumi also looked forward to meeting this old man who let her be dependent…
