On June 2, 2008, Toei announced on its various official websites that there would be a series of short five-minute internet movies that are spin-offs of Kamen Rider Kiva: King of the Demonic Castle. The featurettes are called Kamen Rider Backwards-Kiva: Queen of the Demonic Castle. In these shorts, Otoya and Yuri are brought into the present by Castle Doran when the mysterious Queen of the Legendorga is about to be revived. The shorts themselves are all zany misadventures of everyone in the Kiva cast.
瀬戸康史
as Wataru Kurenai / Kamen Rider Kiva
武田航平
as Otoya Kurenai / Kamen Rider Ixa (1986)
加藤慶祐
as Keisuke Nago / Kamen Rider Kiva (2008)
柳沢なな
as Megumi Aso
高橋ユウ
as Yuri Aso
Kohei Kumai
as Kengo Eritate
山本匠馬
as Takato Shirimine / Kamen Rider Rey
小池里奈
as Shizuka Nomura
滝川英治
as Riki
小越勇輝
as Ramon
松田賢二
as Jiro
