Mitsui Eriko is 29 years old, married for six years, and has one child. She was born in the Yahata area, where a famous general ruled. She works part-time at a family restaurant three days a week. Her husband is a salesman at a travel agency. They met while working at the front desk of a city hotel in Otsu. She has been busy raising her children and doing housework, and her husband's work has become busy, so they have not had sex for nearly three years. A friend who heard this story applied for the job without telling Eriko. She probably never thought she would be having sex with another man...