Ranma spends a month alone with his mother getting to know her. During that month, Nodoka found a magical stone that erased inhibitions about sex between family members, and while teaching Ranma about sex education she goes too far and they make love with Ranma being in both forms. Ranma decides she wants to feel sex with a man so she takes the stone to the Tendo’s where her father does her while the Tendo’s do each other. (LEMON Warning. very graphic sex scenes.) Sequel Sailor Goddess.