Twenty years ago, Takeda Kunizen secretly saw his father presenting a scroll to his younger brother Kosho. Kokatsu believed that the scroll contained "martial arts secret techniques". One day, a new immigrant, Xiaoyue, was bullied. A quasi-Olympic karate player, Zhuang Hui, got involved. Zhihao, a gangster who was put on a horse by a gangster, was involved. He was just passing by to stop the fight.

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