Ayano has been raising her son Kei on her own. Kei innocently asks, "Aren't you going to get a new boyfriend, Mom?" Although she replies, "There's no need,"Ayano, still in the prime of her life, spends her days alone, feeling lonely and comforted. One day, Ayano discovers a large amount of used tissues in Kei's room. Ayano is stunned by the extraordinary amount, but she has no idea that the large amount of sperm was released while thinking of her mother. Kei's twisted feelings towards his mother were on the verge of exploding...