Her father-in-law, Taku, visits the house on his day off, and Azusa and her husband enjoy a family get-together... But in reality, Azusa and her husband are constantly at odds with each other, and they are unable to even have sex at night, leading to frustrated days. Worried, Azusa consults Taku, and, with the help of alcohol, she gives in to him. The next morning, Taku decides to "forget about yesterday," but Azusa can't suppress the throbbing in her body that was once aroused by her father-in-law's persistent caresses, which her husband doesn't have...