Jin Yu was once an athlete of unremarkable talent, but he dreamed of competing on the field. An accident gave him a System that turned athletic performance into data and games, setting him on a path to defy fate. But he also has a hidden past: he was once a killer in the shadows. During a mission, he unexpectedly reunites with his childhood sweetheart, who is now a mother. Hiding his identity, he quietly protects her. But a vendetta shatters their peace. On a blood-red Christmas Eve, bullets shatter a shop window, and he faces an impossible choice: rely on his killer's instincts to protect his family, or give up the killer's code of survival for their sake. On the playing field, he must overcome the limits of his talent, defeat prodigies, break through the old sporting establishment's stranglehold, and become a legend. In life, he must resolve misunderstandings with his beloved, protect those he holds dear, and keep his identity as a killer secret. Every choice could mean life or death, and could make or break his relationships. Amid all these hardships and dangers, his fate is about to be rewritten forever.
