"Why don't you show my grandson's face ...?" I was upset by the words my father-in-law gave me. When I decided to go on a hot spring trip with my family of four, my father-in-law asked me to work hard to make children using the atmosphere of the hot springs, and I was ordered to live abstinently for a month before the trip. However, my wife was not interested in making children and was refused no matter how many times I invited her, and when I was wandering around the inn to distract my anguish, I happened to witness my mother-in-law taking a bath.