Arisa lives with her husband and son. Even though her husband has a son who is a student, he is an easy-going man who doesn't mind flirting with her. One day, the son who saw her parents' sex explodes his desire. The next day, her son, who approached her mother saying, "I can't stand it anymore!" She was Arisa who had no choice but to accept her on the spot, but she gradually began to have different feelings.
