"He won't come home today either..." Minami is worried about her relationship with her husband. Worried about Minami, her son Yosuke falls in love with her as a woman. One day, Yosuke sees Minami looking lonely and is unable to suppress his growing feelings for her, so he attacks her instinctively. Minami is stunned but resists, but his sexual desire is ignited and burns brightly, and he shoots through the depths of her vagina in an instant...