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2005 | 21 Episodes

Season 1 of KO One premiered on November 26, 2005.

2012 | 30 Episodes

Season 2 of KO One premiered on December 26, 2012.

A time quake propels Wang Dadong into the future, where he encounters a classmate named King who presides over the KO One.

2013 | 40 Episodes

Season 3 of KO One premiered on July 5, 2013.

As a guardian of space-time order, 28-year-old Wang Dadong returns to Bale High School to investigate an anomaly and clashes with King.

2016 | 60 Episodes

Season 4 of KO One premiered on June 27, 2016.

2018 | 60 Episodes

Season 5 of KO One premiered on January 22, 2018.