Takariko lives with her husband and son Koichi. The reason why a long married life is good is "sex". My husband was satisfying Takariko's sexual desire almost every day. ...One day, my husband goes on a business trip. What's more, the timing was bad, and Takariko was just a few days away from her period. Takariko has been worried about her sexual desires becoming abnormally high before her period. Then Takariko instinctively puts a motion on the courier who visited her house...