Kiriko lives with her husband and son Koichi. The reason why long married life is good is "sex". My husband was satisfying Kiriko's libido almost every day. … One day, my husband goes on a business trip. Moreover, the timing was bad and Kiriko had her period in a few days. Kiriko has been worried about her sexual desire increasing abnormally before her period. And then, Kiriko unintentionally motions the courier who visits her house…