His wife "Nanako", her husband "Ryo", and their friend "Toru" have been friends since they were in college and have a close relationship where they can talk about anything. Neither Nanako nor Toru had ever considered each other as the opposite sex. One day, when Ryo was late at work, Toru took out the hemp rope he had purchased for her younger girlfriend and her introductory book, and started tying Nanako up as a practice table in her playful way. Noda.
