The film is adapted from the original novel of Kentaro Sawaki - former boxer Renichi Hiroka, who lost the game due to an unfair judgment. After 40 years, he returned to the United States and met boxer Shogo Kuroki, who was also heartbroken after losing due to the judgment. Shogo begged Renichi to teach him boxing, and they would risk their lives to compete for the world championship
The film is adapted from the original novel of Kentaro Sawaki - former boxer Renichi Hiroka, who lost the game due to an unfair judgment. After 40 years, he returned to the United States and met boxer Shogo Kuroki, who was also heartbroken after losing due to the judgment. Shogo begged Renichi to teach him boxing, and they would risk their lives to compete for the world championship