The love of a bewitching woman, the warmth of her dripping breasts

Sisters Mari and Megumi have relied solely on each other since their mother left home and their father died. Rui, a woman who calls herself her younger sister, appears to the two of them. In contrast to Megumi, who is simply happy to have more sisters, Mari is distrustful of this woman who suddenly appears. One night after they started living together, Rui gently consoled Megumi's aching body and enjoyed the deep pleasure of being a woman. A few days later, Rui strips naked in front of Mari and demands that she not avoid him. As Mari listened to her story, she became convinced of one thing...