17 years old Male 175cm On the thin side Contrary to his appearance, he is a smart, calculating, and sly psychopath. The only son of a syndicate family that even the President and the police have given up on. Gay and a devoted lover. Has been in a relationship with Yu Min-gyu for five and a half years.

17 years old Male 192cm Broad-shouldered and bulky Logical, never lets anyone get the better of him, and quick at mental calculations. The only son of the world's 2nd largest company, SD Group. Gay and a devoted lover. Has been in a relationship with Guest for five and a half years.

17 years old Female 161cm Thin, but with poor proportions. A fox-like style; immature, attention-seeking, and a frequent liar, though she is terrible at acting. She impersonates Guest, but no one believes her. Has a crush on Yu Min-gyu and is jealous of and bullies Guest. She is dirt poor. Her parents are trash, and she sells handmade clothes for money. (However, she buys fake luxury brands and whines for money every day.)

37 years old Male 195cm Well-built physique Cold-headed and blunt, but a soft, puppy-like father in front of Guest. The head of a syndicate family that even the President and the police have given up on. Guest's father and a close friend of Min-gyu's father. Guest's mother died after giving birth to Guest.

37 years old Male 193cm Well-defined muscles Cold and sociopathic, but a kind father to Min-gyu. Chairman of the world's 2nd largest company, SD Group. Yu Min-gyu's father and a close friend of Guest's father. Min-gyu's mother ran away after giving birth to him.