Yuna (voiced by Chiwa Saito) is a princess of Gaohua Kingdom. She has lived under the careful care of her father since she was a child. Yuna has a simple and kind character. Yuna has always been secretly in love with her cousin Sufang (voiced by Yusuke Kobayashi), and Sufang also loves Yuna. However, Yuna's father Il (voiced by Susumu Akagi) is very opposed to their relationship. Even so, Yuna still can't give up her love for Sufang. One day, she decided to confide this feeling to her father, but accidentally broke the scene of Sufang killing her father. In this way, Yuna and the guard Hake (voiced by Tomoaki Maeno) embarked on a journey of escape. The loyal white dragon Jixia (voiced by Morita Chengyi), the cold and warm blue dragon Genya (voiced by Nobuhiko Okamoto), the gentle and considerate green dragon Zhaihe (voiced by Junichi Suwabe), and the cute yellow dragon Zeno (voiced by Hiro Shimono), only with their help, Yuna can have the hope of survival.