Dutiful Mother Tia. The Oshima family, consisting of the father and his two sons, were living together until one day a sudden miracle appeared... Starting today, cute and lovable Tia is going to be our mother!? This is a crazy story of love and youth and sex that happens when the slightly air headed and very sexy Tia comes to live at the house. Sex with her husband, with her ex-boyfriend, and forbidden cherry popping virginal sex with her stepsons... Enjoy the sex lives of this family as they grow hornier and hornier..