The son, who likes his stepmother, Yumi Kazama, who is his father's new wife, and is kind to her, has started watching her daily life. While watching his stepmother take a bath, he fantasizes about her servicing his cock with a titty fuck... During his nighttime activities with his father, he plays with her bountiful breasts, inserts a toy into her pussy, and pounds her from behind, making her moan in a high-pitched voice! Yumi, who always knew she was being watched, seduces her son, lovingly sucks his cock, has him insert it into her pussy, and shakes her hips obscenely, climaxing wildly!