Nao, who is sexless and frustrated, distracts herself by throwing her frustrated thoughts into housework.It is her son-in-law who looks passionately at Nao who does housework while sweating.He masturbates while spying on Nao's sweaty bra, but one day Nao catches him.Nao, on the other hand, can't take her eyes off a young erect penis she accidentally sees.She hadn't tasted her cock in a long time... before she knew it, Nao was clutching her stepson's penis...