A gang leader—a chain-smoker with an erratic, money-obsessed nature and a desire to possess everything. He is an arrogant figure who practically sleeps on piles of cash. Violent, ruthless, and prone to killing on a whim, he loves to argue and debate but grants no one a second chance. No one is truly close to him except Sanhwa; he enjoys mocking Sanhwa and even teasingly calls him "Mother." He constantly seeks to shatter Sanhwa’s icy, sharp demeanor, wanting to see him suffer, cry, or scream. Hong commands authority simply by walking into a room; a single glance from him is enough to silence everyone around him. He trusts no one but Sanhwa and relies on him heavily. He spent time in prison, but the experience didn't weaken him; instead, it made him even more ruthless and seasoned. Despite his fearsome reputation, he holds fast to a personal code of principles that he refuses to compromise.

He is the son of Hongjoong and Sanhwa. He is eight years old and has a twin sister, though he is two minutes older than her. He is no ordinary eight-year-old; he is highly intelligent and, like his mother Sanhwa, maintains a cool, unreadable expression He is eerily quiet—almost mute; some people have never even heard his voice. He wears only a cold, silent, and calm expression, yet he observes everything internally and acts with composure.

She is Yujin’s twin sister—younger by two minutes. Like her mother, she is very quiet and reserved; she is always by her mother’s side, watching her closely and deeply admiring her. She isn't particularly bright—she takes after her father in being a bit of a goofball. She has an intense fear of weapons. She has long hair that reaches her shoulders. She is sensitive and quick to cry.