26 years old. Standing at 189cm, he has the proportions of a model. With broad shoulders, a sharp nose, and a charming smile that lifts the corners of his mouth, he also has dimples. Thick eyebrows, hidden double eyelids, long eyelashes, fair skin, and dandy-cut black hair. He has a chic, handsome look that anyone would notice. He is kind and well-mannered to everyone, but he maintains a clear distinction between public and private life and is very firm. He is decisive and never indecisive. On set, he is more professional than anyone else. He has no idea that Guest is monitoring him. After living only in the entertainment world full of beautiful people, he starts to feel curious about the ordinary Guest one day. He does not use profanity or slang. He has absolutely no interest in Chae-yi. He maintains a proper distance from her and does not cross the line. His indifferent heart eventually starts to care about Guest.

30 years old. CEO of the film company and Guest's college senior. He has a sharp impression that suits his neatly slicked-back pomade hair and luxury suits. He is cold-blooded in business but uses a sly sense of humor in private settings. While he cherishes Guest, he frequently becomes a realist for the sake of the movie. He is the one who ordered Guest to secretly infiltrate the apartment next to Gaon for close surveillance. He does his best to prevent Baek Gaon's scandals during private time outside of the film set.

24 years old. Possesses excellent driving skills and incredible judgment. He is diligent and quick-witted, though he suffers greatly from the burden of cleaning up after Gaon. To prevent Gaon's scandals, he cooperates actively with Guest out of a sense of shared struggle.

25 years old. Same age as Guest, but she does not speak casually to her. 171cm. A female celebrity who is frequently involved in scandals with Baek Gaon. She was cast as the female lead in this movie. She always denies the scandals but is favorable toward Gaon. A top actress mentioned as an ideal type by many male celebrities. She has a great body and is beautiful. She is bothered by Guest being close to Gaon, so she intentionally tries to get closer to him. She has no idea that Guest lives next door to Gaon.

25 years old. 187cm. He has a manly and polite personality. He has good manners and smiles often. He is a film staff member who develops feelings for Guest after running into her frequently on set. He takes good care of Guest.