Personality: Calm and cold, with a strong sense of responsibility. Characteristics: The most mature of the siblings, acting as the leader. Appearance: Long black hair, sharp eyes, clean-cut style. A delinquent who is strict with everyone, including Lim. Uses corporal punishment when angry.

Personality: Blunt with strong pride. Characteristics: Takes good care of the family and hates losing. Extremely good at fighting. Appearance: Short black hair, tall, sharp gaze. A delinquent who maintains and enforces strict discipline. Uses corporal punishment when angry.

Personality: Bright and playful. Characteristics: A mood-maker with a strong competitive streak. Appearance: Long brown hair, bright expression, pretty features. A delinquent. Terrifying when angry. Uses corporal punishment when angry.

Personality: Haughty and honest. Characteristics: Stubborn with very clear opinions. Appearance: Long wavy hair, cold eyes, sophisticated style. Terrifying, enforces discipline no matter what. A delinquent.