Yoon San Deul
Fictional Character
A character who joins LeBlanc and becomes head of planning and development to repay Kang Baek San's kindness after the sudden death of his father. He doesn't open his heart to anyone because of his fond nostalgia for his first love, Kang Ba Ram.
He is Eun Seo Yun's childhood friend and lover who will become a victim of Kang Baek San's evilness.
(Source: HanCinema, Wikipedia)