PRED-319 I can't call her mom. The young and beautiful woman my father remarried, I secretly had sex with her inside for two days and three nights during a family trip... Yu Hatada.

There's no way I can call such a beautiful and sexy woman 'stepmom'! My old man, who's still quite the stud despite his age, remarried to someone young and gorgeous. Seeing our awkwardness, my boisterous dad enthusiastically declared, 'To strengthen our family bonds, we're going on a trip!' He has no idea that I've been disturbed every night by their sex noises... On the first night, when my old man passed out drunk, something inside me snapped. I kept having unprotected sex with beautiful Yusuke over and over again... I guess I inherited my old man's stamina after all...!