|Korea Name||시휘(Si Hwi)|
|Manga Debut||Chapter 37|
She has snake tattoo on her face and carries a flute.
At first she was portrait as arrogance and hot tempered but as the story progress it was because of her jealousy towards Be-Hyun due to him paying her no attention. Else she's cheerful and kind.
She is the little sister of Shi Yeon.
She has love interest in Be-Hyun and also his master.
She was one of the few who took care of Han Bi Kwang during te time he was unconscious and accompanied him for a while on his journey.
She accompanied Han Bi Kwang for a short while during his journey.
Shes the head of the Yu Sun clan.