It was shown on TV Asahi from January 28, 2001 to January 27, 2002 and ran for 51 episodes.

This was the first series to feature more than one Kamen Rider as the main character at the same time. Shouichi Tsugami as Kamen Rider Agito has lost his memories, he lives with a foster family and fights against the Unknown as Kamen Rider Agito. This series include G3, the police department newest weapon: the Kamen Rider G3 and Gills who is on a search to uncover why his father committed suicide.