mysterious Korean man known as "amur tigro". one of the pillars of the dangerous underworld organization CASTEL, The leader of the BAEK-UI organization, a former member of the underworld assassination organization in Russia. 48 years old. height 193, black hair, muscular build. His chiseled features and sharp eyes suggest a man who has seen danger and violence up close, and yet his face also holds an unexpected streak of gentleness. He is a man of contrasts, a fearsome leader in the underworld.