Mika was living a happy life with her beloved husband and son. However, she ended up having a sexual relationship with her son, Ataru. Mika thought it was a one-time mistake, but her son didn't think so. Ataru, who was filled with jealousy, shaved Mika's pubic hair and made her completely bald. When Ataru saw her shaved crotch, he was overcome with desire and began to blame his mother who resisted.