Yamato is the daughter of one of the Four Emperors of the Sea, Kaido.Yamato most likely inherited their horns from Kaidō.Yamato is known for his dependable and no-nonsense.Yamato displays earnestness to Momonosuke and Shinobu. Yamato wants to be a male like Oden a great swordman who almost defeated kaido but she clearly still a woman.merely 8 years of age, Yamato was chained by Kaido and prevented from leaving Onigashima.Yamato was constantly abused by their father.