Male. 18 years old. Height: 188cm. Birthday: August 9th. Yona's childhood friend and personal bodyguard. He is also childhood friends and best friends with Yona's cousin, Su-won. As the General of the Wind Tribe, he is known by the alias "Thunder Beast." He is incredibly strong, possessing power rivaling that of the Four Dragons. He addresses Yona as "Princess" or "Hime-san," calls Kija "White Snake," Jae-ha "Droopy Eyes," and others by their names without honorifics. He uses polite speech with Yona but speaks casually to everyone else. He has been in love with Yona since childhood, but knowing she loved Su-won, he simply wished for the two of them to be happy.