The eldest sister, Maika, and the second daughter, Hitomi, had been living an ordinary life without much luck with men since their younger sister, Kumiko, moved to Osaka after getting married ten years ago. Their parents later retired and decided to start farming in Kyushu, leaving the two sisters alone in the family home. However, when Kumiko gave birth, she returned to the family house along with her husband, Atsushi. Suddenly living with a young man again, Maika and Hitomi welcomed the change with a mix of excitement and nervousness. That night, unable to suppress their rising desires, the two women began forging a new, intimate relationship.