Yurina and Marie are best friends. The two were always together and already had a physical relationship that was more than their best friend. Yurina had an older sister, Kyoko, who had an extraordinary affection not only for Marie but also for Kyoko. One day, Marie and Kyoko meet. Yurina burns an extraordinary jealousy for Marie, who is fascinated by the beauty of her child today. A jealousy lust lesbian drama in which pure and straightforward affection pierces heavily and sharply.