It's been three years since Kumi, the third daughter of three sisters, got married and went out to Osaka, and ten years since her parents went to Kyushu to start farming after retirement. The eldest daughter, Maika, and the second daughter, Hitomi, who were left behind in their parents' home, were not blessed with a man and lived ordinary and humble days. One day, after giving birth to Kumi, I decided to live with Kumi's husband, Atsushi. Maika and Hitomi, who lived with a young man for the first time in a long time, were happy to welcome them with their hearts swelling in anticipation. And that night, the two who can't control their desires ...