It was shown on TV Asahi from February 3, 2002 to January 19, 2003 and ran for 50 episodes. This serie has 12 Kamen Riders.

Shinji Kido, a reporter, finds his way into a parallel world that exists within reflective surfaces. In this parallel world, Shinji forms a contract with a creature known as a Mirror Monster, allowing him to transform into Kamen Rider Ryuki. Together with Kamen Rider Knight, Ren Akiyama; friend and also rival, they join a tournament with twelve other Kamen Riders who are fighting to be granted a single wish.