Ten years ago, the fall of his father, the death of his mother, and the disappearance of his brother brought the family business to the bottom. A man wanders in the dark, encounters a mysterious man by chance, and changes his life. He returned to the family with a new identity, restored the family's status, and revived the family business. And this new identity is the world's number one killer with the help of the Black Fox Gang. During another battle, he saw the familiar shadow of his brother, but he could not recognize him. Later, after solving the many obstacles in front of me, I found that someone was silently helping me. At this time, the real story had just begun.