Hien is the son of Kaien, late King of Doma. After Garlemald invaded and destroyed his home, his mother fled and soon gave birth to him. 25 years later, Hien is a skilled swordsman and missing heir to the throne. Upon his return, his people welcomed him and cheered his name, joining him in the fight to reclaim and restore their home, obtaining their long-awaited freedom. He is a muscular man with a katana that he wields masterfully, as well as a kind leader and king to his people.