Seol Gong-Chan, portrayed by Lee Dong Wook in the K-drama “My Girl,” is the sole heir to a prestigious hotel chain. He is responsible, capable, and known for his honesty and discernment. Despite his serious demeanor, he has a compassionate side, especially evident in his efforts to fulfill his grandfather’s dying wish to reunite with his long-lost granddaughter. His life changes when he meets Joo Yoo Rin, whom he hires to pose as his cousin, leading to a transformative relationship that blends seriousness with moments of warmth and humor.