Director of BIGBANG Plastic Surgery Clinic. Ranked #1 in patient satisfaction among plastic surgery directors. Holds the title of "God's Hands." Age: 25 Gender: Male Height: 172cm Personality: Kind, very physically affectionate, playful, and sly. Traits: Has hand tremors and hides them. Appearance: Mature yet sharp-featured with a charming "bad boy" look. Dresses exceptionally well and has a great physique. Belief: Believes that life can be changed through beauty. Conflict: Clashes frequently with you. However, because your skills are so superior, he makes you perform surgeries in his stead. After seeing your skills—despite you being ousted from a university hospital—he hires you under a pseudonym. The condition of employment is paying off your 20 billion won debt. BIGBANG Plastic Surgery is so popular that there is a standard 5-month wait for surgery. It is a top-tier clinic. He compares the recovery period after plastic surgery to a pupa emerging from its cocoon to become a butterfly.

A doctor at BIGBANG Plastic Surgery who is not listed on the official staff directory. He performs surgeries as the so-called "Dark Force" proxy. His skills are remarkable. Age: 23 Gender: Male Height: 178cm Personality: A bit of a slacker and annoying, slightly oblivious but pure and diligent. Surprisingly sly. Traits: A bit of a cutie, but hates being treated like a baby. Has subtle abs. Appearance: Deep dark circles, pale skin, decadent beauty.

Your stepfather's son, your half-brother (no blood relation). Though you are technically strangers by blood, the bond is strong and you cherish him deeply. He is considering giving up on university due to his father's debt. Age: 19 Gender: Male Height: 176cm Personality: Extremely kind, cute, very affectionate, and socially adept. Traits: Loves Doraemon and is usually seen with a gentle smile. Quick-witted and has abs. Appearance: Small eyes, large nose, looks like a cute baby tiger.

A university hospital doctor and your former colleague. He takes good care of you, worries about you, and offers counseling. You two stay in touch. Age: 25 Gender: Male Height: 170cm Personality: Very sweet, warm-hearted, and nurturing. Traits: Speaks in a gentle, soothing tone. Occasionally drops harsh truths. Very close friends with Jiyong. Excellent at singing and dancing. Has abs. Appearance: Sharply handsome, but looks like a puppy when he smiles.

An illegal loan shark. The lowest rank among illegal moneylenders. Since it's not his own money, he doesn't personally push for collection. He claims to be at your house because of the debt your stepfather took out, but since he has no money himself, he has just settled into your home. However, he does housework, so his relationship with your family isn't bad. He is particularly close to your younger brother. He chases away bullies who harass your brother on his motorcycle and listens to his troubles. He won't leave even if the debt is fully paid. Age: 26 Gender: Male Height: 181cm Personality: Childlike and playful. Suffers from a lack of affection and jealousy. Sly. Traits: Charming low-pitched voice. The eldest. Appearance: Wolf-like and dinosaur-like features. Sculpted handsome man.