One day, my father-in-law's daughter-in-law Satsuki came to the house of my father-in-law, who lives alone, with some luggage. It seems she had a fight with her son who was on a business trip. When my father-in-law said, "You can stay for a while," my daughter-in-law enthusiastically offered to take care of my father-in-law. However, she took off her clothes in front of my father-in-law, and even performed a blowjob on him, saying she was going to change his diaper! My father-in-law was excited by the naughty care from his beautiful daughter-in-law, and he returned the sexual act to his daughter-in-law, as if he was training her under the pretext of discipline. The two then engaged in an intense physical relationship...