Plot - Kamen Rider Kiva: King of the Castle in the Demon World
Kamen Rider Kiva: King of the Castle in the Demon World is a Japanese superhero Tokusatsu Summer Movie for Kamen Rider Kiva double-billed with Engine Sentai Go-Onger: Boom Boom! Bang Bang! GekijōBang!!.

Kamen Rider Kiva: King of the Castle in the Demon World
In the film, the Legendorga resurfaces in modern times, forcing Wataru to go back in time and receive assistance from his father.
Story Kamen Rider Kiva: King of the Castle in the Demon World
The story begins in 2008 as the Antlion Fangire begins to feed at an exhibit room until Megumi intervened as Nago arrives to slay the monster.

Kamen Rider Kiva: King of the Castle in the Demon World 2008
However, during their struggle, the Mummy Legendorga suddenly resurrects and feeds on the humans before using his power to turn the Antlion Fangire into his slave to aid him in overwhelming Nago with the Arms Monsters watching the fight.

Watch online Kamen Rider Kiva: King of the Castle in the Demon World
While this occurred, Wataru Kurenai starts attending a local high school at Shizuka’s suggestion after a welfare officer visited him and quickly befriends Natsuki Tsukue, who tries to get Wataru to join several clubs where he fails in each one while trying to ask her if she would like to start a violin club after hearing her play, she refuses out right.

Kamen Rider Kiva: King of the Castle in the Demon World English sub