Supporting
Jo Hye-joo as Cheon Ha-ri
Yeo-ri's younger cousin, although she is not related by blood to President Baek Gyeong-ja, the head of the group, which puts her at a disadvantage in the race for succession. Because of this, she feels an inferiority complex towards Yeo-ri, whose position she covets.
Ye Soo-jung as Baek Gyeong-ja
Yeo-ri's grandmother and president of Reina Hotel & Resort, Korea's leading hotel chain. Yeo-ri is her only blood relative.
Baek Ji-won as Ok Gye-hee
Daughter-in-law of President Baek Gyeong-ja, and mother of Dong-jun and Ha-ri. She is the director of the Cheon Gallery. Her late husband was not her mother-in-law's biological son, but while President Baek, the conglomerate's founder and Gyeong-ja's husband, was alive, she enjoyed his immense favor and, therefore, the full support of the group's directors.
Lee Dal as Cheon Dong-jun
Yeo-ri's cousin and Ha-ri's older brother. An ambitious, straightforward man with a knack for intrigue, he craves success and ostentation.
Lee Chang-hoon as Go Pil-dong
An investigator at the Seoul District Prosecutors' Office.
Kim Min-ho as Son Hyeong-min
Im Chae-young as Lim Seo-hyeon
Kim Seo-ra as Song Hee-won
Vice Chairman of the CL Hotel & Resort Group. She were Min-hwan and Ji-hwan's mother.
Kim Do-wan as Park Seung-jae
Ha-ri's fiancé and a professional golfer. He is the only son of one of the leading presidential contenders. He was acquitted in the first instance in the trial where Kang-wook accused him of murder, but in the aftermath of that trial, he is consumed by an uncontrollable desire to take revenge on the prosecutor.
Lee Jun-hyeok as Bong Ji-wook
General Manager of the Reina Hotel and Yeo-ri's closest confidant.
Kim Han-na as Uhm Ji-soo
Yeo-ri's closest secretary.
Kim Min-chul as Kang Ji-hwan
A ghost with the appearance of a young man who haunts Yeo-ri.
Cha Mi-kyung as Paeng Myo-sun
Kang-wook's grandmother.
