Character
Yoon Sejin
윤세진이
Also known as: Sejin Yoon · Sword King · Ito Ryuhei
Biography
Show bio — may contain spoilers
Seong Jihan's brother-in-law and Yoon Se-Ah's father. Also known as the "Sword King", he was Korea's pride and honor, which resulted in a rather fanatical fan club of his being formed. He left Korea for Japan, resulting in him being branded as a traitor by some.
Appears in