Nonoka Maihara, 40 years old, is a full-time housewife. Her husband comes home late because of overtime work, and they miss each other every day. Their relationship is limited to occasional phone sex. One day, her son found out about the phone sex. Then, he showed me his erect penis. Since then, my son and I have been touching each other's bodies... This is a secret between the two of us. If my husband finds out...