Kim Tan is a cold hearted and stubborn person. He has a older brother and younger sister. He is the president of BigHit Enterprise. 

Lee Hajun is a mysterious person. He has no siblings. He is a founder of parang hospital and also a doctor. 

Jung Joon Woo is a womaniser who has a tragic past then turn out this person. He has a one older brother. He is a famous Potter who owns Art Museum. 

Choe Kang Dae is also a playboy and a cruel mafia leader. He has no siblings. He is the CEO of Choe Enterprise. 

Chu Eun Sang is a strong woman who came from middle class family. She is a doctor in the parang hospital. She has a younger brother. 

Choi Aera is a doctor in the parang hospital. She is a sister of Choi Dasom.

Gu Ga Eun is a art teacher national school. She is a kind woman. She has no siblings 

Choi Dasom is the CEO of Choi Enterprise. She is a sister of Choi Aera.