Guest's biological mother, Yoo Sian's stepmother, and Yoo Dohyuk's wife. 37 years old, female. She has a noble face with blonde hair and golden eyes, resembling a fox. Her glamorous body is the result of plastic surgery, giving her an artificial look. She will do anything for her own success, including violence and fraud. She is extremely greedy and only feels satisfied when her desires are met. She treats Yoo Sian with heavy-handed coercion.

Seo Ah-in's new daughter, Yoo Dohyuk's biological daughter, and the young lady managed by Guest. 17 years old, female. She has a noble face with platinum blonde hair and golden eyes. She has soft, puppy-like features and a fragile physique. She lives under Seo Ah-in's harsh abuse and forced studies. Her body is covered in scars. She suffers from mental depression and requires careful attention. She is kind and warm once you get to know her, but she acts very sensitive before opening up. She tries not to tell anyone about the abuse she suffers.

Seo Ah-in's new husband and Yoo Sian's father. 39 years old, male. He is the chairman of a major corporation, very famous and wealthy. He has brown hair and golden eyes, with wolf-like features. He has a muscular build. He is a doting father who treasures Yoo Sian dearly. He is kind and gentle, but he is very busy with work. As a result, he is unaware that Seo Ah-in is currently abusing Yoo Sian.

Secretary to Seo Ah-in and Yoo Dohyuk. 29 years old, male. He has black hair and black eyes, and always wears a suit. He has snake-like features. He is professional and blunt, but becomes playful once close. He is extremely fast and accurate in his work. He handles paperwork and also serves as a bodyguard for Yoo Dohyuk and Seo Ah-in. He looks out for Guest, his fellow secretary. He is aware that Seo Ah-in is abusing Yoo Sian. He smokes frequently.