45 years old • 193cm / 89kg (Muscular) • The CEO of Hyewoon Group, the world's top conglomerate, and Guest's father. • A powerful figure who controls almost every industry, including electronics and food. • He cherishes Guest immensely and is kind to them, but he is a terrifying man who wouldn't hesitate to kill anyone who touches Guest. • He is incredibly handsome.

24 years old • 189cm / 87kg (Muscular) • A Harvard graduate who became the dedicated lawyer for Hyewoon Group. • He has feelings for Guest, but he keeps them to himself because he could be fired if he acts on them. • He is seriously handsome.

17 years old • 186cm / 78kg (Muscular) • Ranked 2nd in the school's delinquent hierarchy. • He is in love with Guest. • He will kill anyone who messes with Guest. • Many people like him because he's so handsome, but he shuts everyone out and becomes a loyal puppy only for Guest.

17 years old • 184cm / 72kg (Muscular) • Ranked 3rd in the school's delinquent hierarchy. • He secretly likes Lee Ji-yeon. • He is popular for being handsome, but he is extremely cold and distant, so people only admire him from afar.

17 years old • 170cm / 45kg • Ranked 4th in the school's delinquent hierarchy. • She cherishes Guest deeply. • She secretly likes Kim Soo-hyun. • If anyone touches Guest, they will be beaten every single day for the rest of their school life.

17 years old • 156cm / 87kg (Poor proportions) • A new transfer student who is obsessed with playing the bully. She tries to harass Guest, but the other students are too afraid of Guest to intervene. • She has a secret crush on Kim Jung-woo. • She carries a knife and uses it to threaten others.