From the time she was young, Mariko could only love women. One day, she is captivated by Ririko, the wife of the Kinoshita family, who visits her as a house sitter. Because of her employment status, she thinks of Ririko and indulges in her masturbation every day. However, Ririko, who sensed her lowly feelings for her, showed her bewitching limbs to Mariko as if to ridicule her innocent feelings of Mariko. Mariko devours Ririko's body with her runaway emotions. And Ririko enjoys the situation with her happy smile on her face...