Summary: Set after the events of Kamen Rider Den-O, Ryoutaro and the DenLiner gang have set up a detective agency called the DenLiner Police (デンライナー署 Denrainā Sho) who seek to keep the Imagin that survived the Junction Point in check after an Imagin stole a spare Den-O Pass from Owner while he was training. While pursuing the Pink Rabbit Imagin via car chase, they cross paths with the Horse Fangire as Den-O and the Tarōs battle them, killing the two monsters and not finding the Den-O Pass on either. Soon after, the DenLiner Police are joined by detective Kazuya Suzuki, who tells them of an "Evil Organization" that is making itself known in the criminal underworld. After R-Ryotaro's "arrest spree", Ryotaro and Kazuya encounter Wataru Kurenai and Shizuka as they are suspiciously digging up items for a new violin varnish. After a small spat with U-Ryotaro and an unintentional possession of Wataru by Momotaros, Ryotaro and Kazuya locate the base of the Evil Organization after Wataru tips them off. There, before being chased out, they find Yuto with the organization's leader, the Imagin Negataros, and a man that Kazuya recognizes as wanted criminal Seiya Kuroki. Acting on his own, Kazuya attempts to arrest Kuroki, only to be ambushed by the Clown Imagin. However, with a drunk Deneb and Naomi as a distraction, Yuto, who has been working incognito, attempts to free Kazuya. Before he can ambush Sarah with a metal bat, he is possessed by Urataros who manages to successfully woo her and wrest the gun away. Yuto kicks Urataros out as he fights her and the Clown Imagin as Kuroki arrives, with K-Ryotaro providing backup. Negataros takes his leave while activating the detonation device with everyone making it out.
At the DenLiner, after Kazuya apologises for almost getting everyone killed and explaining his reasons to be avenging his father Kazuma, Yuto reveals Negataros's plans. Despite telling them that he's too strong, the DenLiner Police decide to attack at full strength together. The next day, Negataros begins to set his plan in motion with Kamen Riders Den-O and Zeronos, along with their Imagin partners, standing in his way while Suzuki arrests Kuroki after the DenLiner takes him and his posse away from the fight. However, Negataros uses the Den-O Pass to become Nega Den-O as the fight begins. As the Tarōs deal with the Fangires, Zeronos battles the Clown Imagin while Den-O dukes it out with Nega Den-O. Nega Den-O easily gains the upper hand against all four Den-O forms, but before he can finish him off, Kamen Rider Kiva arrives to turn the tables as Den-O Climax Form joins him in a Double Rider Kick. The impact forces Negataros out of his Rider form. Refusing to accept defeat, Nega Den-O escapes in the Nega DenLiner with DenLiner and ZeroLiner in pursuit. Castle Doran joins the fight as all three giants destroy the Nega DenLiner, taking out Negataros for good. Soon after, Ryotaro takes Kazuya to 1986 to see Kazuma as he was interviewing Otoya on an investigation, giving the young detective closure. Though they succeeded in their mission to stop Negataros, Momotaros decides to keep the DenLiner Police going as he considers being a cop a cool thing. After they succeed in cornering a couple of crooks, Deneb attempts to ask for Yuto to join the DenLiner Police, failing to see the crooks they cornered escape with the DenLiner Police and Yuto chasing after them.
Summary: King of the Castle in the Demon World features two new Riders, the first of which was shown in silhouette in Japanese children's magazines, Kamen Rider Rey, who is a monster hunter named Takato Shiramine played by Shouma Yamamoto. He is partnered to Rey Kivat, voiced by Norio Wakamoto. The villain of the movie is Takashi Sugimura who is a death-row inmate and transforms into the black and horned Kamen Rider Arc, portrayed by Ken Horiuchi of the comedy troupe Neptune. Arc is to be the tallest Rider without the use of powers at 3.2 m tall. Also guest starring is Gal Sone, who plays a Medusa-like villainess named Sayaka who, among other creatures known as the Legendorga, aids Arc in his quest to rule the world. As part of the role, Gal Sone will show off her competitive eating skills. Toshihiko Seki, Kōji Yusa, Masaki Terasoma, Kenichi Suzumura, Rina Akiyama, and Ryo Ueno of the Den-O cast are all to have cameo appearances in the film.
Summary: Twenty-two years after the disappearance of his father, Wataru
Kurenai lives in an infamous "haunted house" where he is destined as
Kamen Rider Kiva to fight life-draining monsters called Fangires, the
very race his father fought years ago before his disappearance. Wataru
must also deal with Kamen Rider Ixa who is part of an organization seeking to destroy the Fangire menace, as well as the Fangires' own Rider, Kamen Rider Saga.
The story is split between the actions of Wataru in the present
(2008–09) and his father Otoya in the past (1986–87), slowly revealing
the link between the Fangire Race and Kiva.
The characters of Kamen Rider Kiva are spread throughout two
time periods, each related to one another. There are the actions of
Otoya Kurenai and the Fangire Hunter Yuri Aso with the Wolfen Jiro in
the year 1986 with the first Ixa Ver.Ⅰ that result in the various
Fangires that persist to the current day, in 2008, with Otoya's son
Wataru (as Kamen Rider Kiva) along and Keisuke Nago (as Kamen Rider Ixa
Ver.Ⅹ) and Yuri's daughter Megumi (also a Fangire Hunter), dealing with
the Fangires to prevent deaths.
