The intense jealousy and love that an older sister feels for her younger sister... A sister relationship that is a mixture of viscous lust, double-cast by popular actresses Maki Hojo and Tsubomi!! Maki, the older sister, has had a complex about her younger sister Tsubomi since she was a child. Before she knew it, Maki wanted to follow the same life as Tsubomi and believe that she was living a happier life than her sister. If her sister gets married, she gets married too, if her sister gets divorced, she gets divorced too, if her sister remarries a man with a child, she remarries a man with a child too. Furthermore, if her sister has an affair with her stepson, she also gets involved with her stepson...