Meiko, a daughter-in-law who lives with her father-in-law at her husband's parents' house.Her father-in-law, who lost her wife when she was young, is an erotic novelist, but recently her own books have been struggling to sell.Her girlfriend Meiko reluctantly becomes a model for her sensual novels by sticking out her own body for her father-in-law.While working hard to make a child with her husband, her perverted father-in-law conducts anal training all over her house, such as the living room, kitchen, bath and toilet.Meiko will not only be deprived of her first anal, but will transform into her perverted wife who feels more anal than mako.Crazy family circumstances that made it impossible to return to normal sex life due to anal.