Mayu Satomi Satomi, with her soft body, F-cup breasts, and adorable innocent expression, has become a twin! The easygoing older sister Mayu and the cheeky younger sister Mayu have a creampie battle over their beloved older brother! The first one to get pregnant wins, and the two Mayu's are both eager to be creampied first! The older sister Mayu is a sadist and the younger sister Mayu is a submissive masochist! What will the brother who is moaning with joy give him?!