Popular series spin-off project! That moderator's older sister who always makes him have incest: A big incest prank plan to impregnate Riri Koda with her younger brother's child! Enter the usual nude panel, participate in the game, and meet your younger brother while having sex! Not only punishment games, but also creampie sex until she gets pregnant, and her first incest while being embarrassed! Plenty of creampie until the pregnancy test kit turns positive!