仮面ライダー電王
Initially, a press release from Toei Company released on January 29, 2009, announced that there would be a fourth film for "Kamen Rider Den-O". It was in production as of January 29, 2009, and was scheduled to be released in April 2009. On February 9, 2009, Toei revealed that this film was to be the first in the , a new multimedia franchise featuring the cast and characters of "Kamen Rider Den-O" and its films.