Mio Kimijima, a chaste wife whose husband and wife both work, works full-time and part-time 5 days a week. - However, without telling her husband, she was being called to a public restroom by a middle-aged man she worked part-time with on his way home from work. - ``I think something will work out about the hourly wage increase, Kimijima-san...'' With those words, the part-time wife is lured out and given a multi-purpose paco in the station toilet. - The husband, who did not know anything, was honestly happy about his wife's increase in hourly wage, but the wife gradually deteriorated both physically and mentally due to her daily actions.