Azusa Amami is 40 years old. She is a full-time housewife and has been married for 15 years. She may look happy from the outside with her smooth sailing life, but her husband, who is the branch manager of a major insurance company, goes golfing and drinks almost every week. Her son, a middle school student, is passionate about soccer. She says she is always left alone at home for long periods of time, which makes her feel lonely. Then, a thought began to grow in her mind: "I want to do something fun too." As she repeatedly masturbates, which has become her daily routine and hobby, she clearly feels her desire to cheat growing. Watch as this wife, who has hidden her lewd true self in order to be a good mother, lets herself go for the first time in 15 years.