Kana, a woman who is engaged to her only son, who is planning to get married this fall. A young man and a woman who were on good terms before marriage spent their days happily going to a ceremony hall in the city on weekends, saying that it was a meeting about wedding receptions and gifts. A father-in-law who always looks at the young and fresh female body prominence of such a "son's betrothed" with a moist and insidious gaze. One day, when my son left Kana and left for work, my father-in-law had a hard erection that was embarrassingly embarrassing for his age...! Free points for the first 1,000 yen!