Seo Yoo-kyung is a distant cousin of Prince William Marcus Lys. She has three brothers, two elder and one younger, but no sisters. She was born in the far-away kingdom of Sunsin, where she dreamed of becoming famous for her musical skills. She is suspected for the death of her rival, Oh Sae-young. Her father Seo San, and mother Seo Jae-Sook sent Yoo-kyung away to keep her safe. #JAT #Legacy