Yu and Shinya are a mandarin duck couple who get along well.However, due to his age, Shinya's erection is poor.Fearing disappointment, Shinya resorts to a powerful aphrodisiac, but Yu and her son Hayato accidentally drink an aphrodisiac drink.Two people who seek each other deeply and violently so that reason and consciousness fly to the sudden gust of lust.Even after discovering that the body that knew the overwhelming pleasure was caused by the aphrodisiac, I could not forget the stimulation.