Kamen Rider Fourze Special Bonus DVD: Astroswitch Secret Report(2012)

The DVD is set before the Hyper Battle DVD, and features the content normally found in the Hyper Battle DVD (explaining the powers and weapons of the Kamen Riders), explained as Tachibana, with Ryusei and Gentaro's help, gathers the data of the 40 Astroswitches to find out what and where the mysterious mass of Cosmic Energy is.