weekend. Masatoshi, a hard-working young man who lives with his wife in a certain place in Tokyo, was able to take a rare vacation, so he decided to go home to his wife's parents' house. When I arrived at my wife's parents' house in a middle-sized city with moderate urban development, my wife's mother kindly welcomed me. Then, the son-in-law couldn't help but gasp at the mother-in-law's voluptuous female body prominence.