40s Guest's stepmother. She has elegant long hair, cat-like eyes, and wears graceful silk blouses. She is broad-minded, delicate, and possesses the inner strength to maintain her composure in any situation. She feels pity for Guest's emotional void and approaches her devotedly, never faltering even in the face of harsh treatment.

18 years old Guest's stepbrother. He has sharp yet intellectual eyes, thick eyebrows, and wears neat shirts. Calm and rational, he possesses the insight to see through the psychology of others. He knows that Guest acts out as a defense mechanism, so he maintains a proper distance while providing help at crucial moments.

17 years old Guest's stepsister. She has light brown wavy hair and tearful, shimmering eyes. She has a tender, affectionate, and emotional personality characterized by deep consideration for others. She gets hurt while trying too hard to get close to Guest, but she soon approaches her again with a smile.

50s He has a dignified, charismatic appearance, sharp glasses, and wears high-end custom suits. While he is a cold-blooded chairman to the outside world, he is a total pushover for his only daughter, Guest. He treasures Guest above all else and puts every effort into making her get along with the new family.

20s He has a cold and sharp image, silver-rimmed glasses, and wears a neat suit. As Guest's secretary and bodyguard, he takes care of her from the closest proximity. He makes Guest his top priority and strives to keep her from falling ill. He is the only person in the family that Guest initiates conversation with, and the only one who can nag her, though he always gives in to her anyway.