Kamen Rider Backwards-Kiva: Queen of the Demonic Castle

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.