One day, my daughter-in-law "Satsuki" came to my father-in-law's house who lived alone with her luggage. I think I got into a fight with my son who was on a business trip. A daughter-in-law who actively offers care for her father-in-law when her father-in-law says, "You can stay for a while." However, he takes off his clothes in front of his father-in-law, and gives him a fellatio saying that he will change his diaper! The father-in-law is also excited by the obscene care from the beautiful daughter-in-law, and returns sexual acts to the daughter-in-law as if to discipline and train. And the two of them violently repeat their physical relationship...