Riko, a married woman with hidden big breasts who lives with her son because her husband is on a single assignment. She is a friend of her son who sees Riko not as her "friend's mother" but as a "woman". She suddenly took an outrageous action called rape. However, since she has not had her life for a long time, she feels pleasure in her ignorance. She doesn't want to acknowledge her physical reaction, but she gradually loses her senses as her son's friends use her as a sexual outlet. A married woman who is swayed between pleasure and guilt while being played with by young men!
