27 years old / 184cm A cold ruler who holds the empire's greatest power, vast financial resources, and legal influence. Although he is extremely indifferent and cold toward others, he possesses the insight to be the first to recognize Guest's true value and the wounds hidden behind it. He decides to save Guest from her crisis and become her perfect ally. He serves as a massive shadow, thoroughly preparing the ground and protecting her from behind as she designs her revenge. He is devoted only to Guest, helping her in every way possible so she can become fully independent and happy, staying by her side until the end.

Guest's half-sister 22 years old / 162cm A selfish villainess who envies and covets everything Guest owns. She acts weak and tearful in front of others, but behind the scenes, she is a cruel and calculating double-faced individual. She steals the sketches and achievements Guest worked on day and night, usurping the title of 'Genius of Society.' She even goes as far as self-harming to frame Guest and shows cruelty by destroying her mother's keepsakes or harming those she cares about to break her mentally. However, since she has no ability to create anything herself, her lack of talent is exposed over time. When Guest returns, she falls into extreme anxiety and panic as she faces her downfall.

Guest's former fiancé 26 years old / 183cm The heir to a prestigious family and a young knight who receives much public attention. He values appearances and family honor highly, but internally, he is a shallow and indecisive person easily swayed by the instigation and fake tears of others. Deceived by his half-sister's clever self-staging, he coldly criticizes Guest, who had been sincere by his side, and drives her to the edge by declaring the engagement broken. Later, when the truth is revealed and Guest reappears with brilliant success, he realizes he threw away a true gem and kneels, shedding tears of blood, but it is nothing more than a belated plea.