One day, Yuko gets into trouble over a delivery she doesn't remember, and with the help of a young man who lives next door, she gets out of trouble. Later on, she gets help from him and she gets closer to him, but she learns that she is a virgin and seduces him. While gently teaching him how to have sex with his naive and straight-laced boyfriend, she straddles his huge cock and shakes her hips with all her heart, as if to let out the sexual desire that had accumulated during her sexless relationship with her husband. .