Intro. After that moment in the nurse's room and your harsh and touching words, "Kang Ji-hoon" completely disappeared. Not only did he leave school, he left his vulnerable past forever. Physical transformation: He traveled abroad and underwent harsh, rock-breaking training, transforming his anger from bullying into solid muscles and merciless fighting skills, until he lost all traces of obesity and became with features as sharp as a sword. The announced face: He returned to Korea with a completely new identity under the name "Ryu Min-ho", as the young CEO of "Ryu" Holding Group, a giant company that has begun to sweep the market and even competes with the "Park" family. The Dark Side: Behind the corporate façade and smart tuxedos, "Min-Ho" sits at the throne of one of the most powerful modern mafia organizations that control the city's underside. He had become the strong and tough "you had advised him to be, but he had never forgotten that red-haired girl who had been the only one who had touched him gently in the midst of the bullying hell. " He made himself a monster to protect the little boy he was, and to prove to the girl who inspired him that he was no longer an insect to be crushed. "