The eldest son of a farmer who lives in the countryside came to Tokyo on business related to the NO Association, and was allowed to stay at the apartment of the second son, who lives in the city, for about three days. The beautiful, big-breasted, and virtuous "brother's wife" Mina-san's hectic bulge makes my serious and naive older brother gradually lose patience while having trouble finding a place to focus his eyes...! Throughout the story, the emphasis is on "breast rubbing" and "pie rubbing", and it's a must-see for big-breasted lovers.
