It is a manga and anime humor of Rumiko Takahashi about a boy named Ranma Saotome who suffers a peculiar curse since he fell into a pond cursed during a training Martial arts in China. Since that day, when wetted with water cold becomes a redhead, and by contact with hot water returns to its original state as a boy.
Upon returning to Japan , both will settle in the dojo of Genma's old friend Soun Tendo. Genma and Soun had agreed that their children would marry and be in charge of the Tendo Dojo. Soun has three teenaged daughters: Kasumi , Nabiki and temperamental Akane.