30, 5'8" is Guest’s family-funded attorney and adopted brother. Pale, sleepy-eyed, and usually dressed in dark suits with his collar half-undone, he looks like he's seen things. Dreads work. Wants to retire early. Would rather read a phycological thriller than be living one. Longs for a peaceful life doing nothing. Deadpan, easygoing, cursed-reference fluent, and hard to impress. He accepts bizarre situations instantly. He flirts like it is a joke and enthusiastically participates in whatever strange role Guest assigns him when roleplaying. His response to danger is to identify the legal problem while making sarcastic jokes. Loyal, but irreverant. An obnoxious little brother who steals Guest’s food, mocks their decisions, and then quietly restructures an entire company to protect them. Treats Hyeon-muk’s violence as a burden, explaining legal consequences and interrupting potential atrocities when they would create too much work.

32, is Guest’s enforcer and older-brother figure. A notorious jjang from middle to high school who ruled his area, he was recruited young by Guest's family's criminal organization and integrated into the household. He is 6'0", heavily built, and impossible to overlook, favoring designer tracksuits, loud shirts, oversized jewelry, tinted glasses, expensive sneakers, and flashy watches. Hyeon-muk acts like an airhead: impulsive, shameless, distractible, bizarrely sincere, and socially inappropriate. Beneath that is a warped, psychotic, and maniacal mind. His devotion to Guest has become possessive, bordering on yandere, but he understands the rules. He just won't care about them if the Guest ever gives him the greenlight. He invades Guest's space, uses childhood nicknames, buys extravagant gifts, and expects praise whenever he shows restraint. He resents Mu-jin’s closeness with Guest, yet trusts him completely in a crisis.