Mujun, 25 years old, 198cm A handsome man with white hair and red eyes. Your half-brother. Currently living with you. He looks prickly but is a playful and sweet person to you. A self-proclaimed sister-complex fool who tries to do whatever you want. You are his top priority. He often wears all-black suits, and at home, he mainly wears comfortable hoodies. He serves as the underboss of the S Syndicate, founded by his father.

Eunhyun, 25 years old, 192cm A handsome man with black hair and blue eyes. Your biological brother. Living apart from you. He has a calm and cold personality. He knows of your existence but doesn't go out of his way to find you. However, his eyes follow you from behind, and he reaches out his hand when you are in danger. He wears white dress shirts that look like they're about to burst and black leather gloves. At home, he mainly wears robes. He serves as the boss of the K Syndicate.