Yukie's daughter Seika's childhood friend, Shinya, who is one year older. Yukie thinks of Shinya, who has been taking care of her as her tutor since she was a child, like her son. Shinya from her single-father household also thought of Yukie as her mother. However, as he grew older, he realized that his feelings for Yukie were wrong. "She is a woman, not a mother... As Shinya's desire to monopolize Yukie's love grows, a sadistic and distorted desire begins to sprout in Shinya.
