Yamato is the daughter of Kaido, one of the Four Emperors in the popular anime series, One Piece. She often proclaims to be Kozuki Oden due to her admiration of the legendary samurai of the past. After meeting Luffy, Yamato decided to go against her father and be part of the Ninja-Pirate-Mink-Samurai Alliance and once Kaido is defeated, she intends to set sail onto the open seas with Luffy and the Straw Hat Pirates.