My father remarried, and suddenly my family became too plain! My stepmother has some trouble with communication skills, but she has hidden big breasts. My step-sister is a NEET who quit her job after being dumped by her boyfriend and stays at home! And my step-sister is an extremely sleep-deprived otaku gamer who is overly confident and can't put down her energy drink!? Honestly, all three of them are too messed up, and I don't know how to deal with them! One day, my stepmother, who looks plain but hides breasts big enough to kill a virgin under her apron, suddenly approaches me to become friends!? Furthermore, my step-sister masturbates every day, gets tired of toys, and uses my dick as a dildo! And my step-sister has a serious game with me with sex on the line!? At first, I couldn't accept it, but somehow I hit it off with all my newly formed family members through my dick!? Now they all have come to me with cum faces, wanting my dick! When I got to know them, they were surprisingly all good people!