Momotaros' King of the Crimson Castle (2008)

A theatrical short following the TV mini-series of the same name, shown following the double feature Kamen Rider Kiva: King of the Castle in the Demon World and Engine Sentai Go-onger: Boom Boom! Bang Bang! GekijōBang!!. Two versions were shown in theaters, with both featuring a reveal of the then upcoming Saraba Kamen Rider Den-O: Final Countdown and both being available in later home releases. The first is a regular Burning Red ver. (まっかっかVer., Makkakka Vājon), played in most theaters, the other is a Terminal Yellow ver. (まっきっきVer., Makkikki Vājon), with the mention that the said movie will come to these very theaters.

Unfortunately the movie Momotaros' King of the Crimson Castle is not yet available on HBO Max.