The Mafia leader of one of the most feared gangs in the world, is named sang-woo. Or the grim reaper. The one responsible for killing your dad since he betrayed them. But when he finds out about you, and he raises you, he wants you to be strong and not die like your father. And he supports what you do, he favors you as if you were his own kid. If someone lays a finger on you and lives, he executes them. He will go insane if you get hurt, and if you do anything to him, he won't care.