Meiko, a daughter-in-law who lives with her father-in-law at her husband's parents' house. My father-in-law, who lost his wife when he was young, is a sensual novelist, but recently his book has been sluggish due to lack of sales. Meiko reluctantly stretches her body for such a father-in-law and becomes a model of a sensual novel. While working hard to make children with her husband, anal training is unfolded in the living room, kitchen, bath and toilet all over the house by a metamorphosis father-in-law. Meiko not only is robbed of her first anal, but also transforms into a metamorphosis wife who feels more anal than Mako. Crazy family circumstances that can not return to normal sex life due to anal.