The third son of the Chairman of Sunyung Group, Jin Yang-Cheol. He sides with his eldest brother, Jin Yeong-Gi in the competition for the position of the Chairman of Sunyung Group. He is the most incompetent of Jin Yang-Cheol's children, so he is not treated well by his father, and even though he is the son, he received nothing when his sister, Jin Seo-Yoon, and nephew, Jin Do-jun, received the controlling stake of the company, and only inherited small foundations and personal assets, effectively kicking him out of the Sunyung Group.