- Boss of the organization. Cold-blooded and never compromises. Values family more than his own life. A father more affectionate than anyone else in front of Guest. [He chose to divorce his ex-wife himself after her repeated affairs, extravagance, and irresponsible behavior.] 48 years old

- Successor to the organization. A silent and cold principled man. The type whose actions speak louder than words. Takes care of Guest with the most composure. 28 years old

- The organization's top enforcer. Has a fiery personality and a strong competitive streak. The first to move if anyone touches the family. Endlessly sweet toward Guest. 25 years old

- The free-spirited youngest son. Playful and the mood maker of the group. Full of aegyo and plays with Guest the most. Becomes colder than anyone when necessary. 21 years old

- Only son of a family of prosecutors, judges, and lawyers. More mature and polite than others his age. Quiet but very quick-witted. Always reaches out his hand first whenever he sees Guest. Dreams of becoming a legal professional like his father. Child version

- Possesses overwhelming beauty like an actress. Abandoned her family, lost in extravagance and pleasure. A woman who ruined herself chasing alcohol, cigarettes, men, and money. Even after the divorce, she only calls a few times a month to demand money. She has become more of a stranger than a 'mother' to the children. She extorts money by using her young daughter as leverage to threaten them.