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Shiro Kanzaki is the mastermind behind the Rider War and the main antagonist of Kamen Rider Ryuki. He is the controller of Kamen Rider Odin and the one who set up the Rider War in order to revive his sister Yui.

He was portrayed by Kenzaburo Kikuchi.

History

Kamen Rider Ryuki

Past

Shiro and his sister Yui lived in a household where they were abused by their parents and forced to stay in the attic. To pass the time, the two siblings would draw monsters and other worlds together.

However, one day, unable to endure the unhealthy conditions of the attic any longer, Yui passed away. Distraught, Shiro made contact with Yui's Mirror World self, who agreed to replace her on the condition that she disappear when she turned 20. As Yui exited the Mirror and merged with her other self however, the act caused an explosion that killed both of Shiro's parents.

Left orphaned, Shiro was adopted by a couple in America and separated from Yui. In the next 13 years, Shiro studied the Mirror World to find a way to resurrect Yui, creating the Mirror Monsters and the Advent Decks in order to set up the Rider War. In the process, Shiro at some point merged with the Mirror World and became a Mirror Being.

Rider War

When the time came, Shiro began the Rider War by finding users for all of the Advent Decks to have them fight it out until one remained and to then have his chosen Rider Kamen Rider Odin come in and kill the final Rider, allowing him to win the Rider War and claim the wish. However, Shiro faced an obstacle in the form of an undetermined variable, Shinji Kido, who entered into the Rider War despite never being chosen by him. Shinji's determination to end the Rider War was a hindrance to Shiro's plans, delaying the Rider War past the day of Yui's death and resulting in him using the Time Vent to reset the War each time. But no matter how many times Shiro rewound time, Shinji would always find a way to enter into the Rider War.

Eventually, Shiro would realize that his obsession with saving Yui only brought pain onto everyone and that Yui could never live happily knowing of the lives he sacrificed for her. Thus, Shiro used his Advent Deck to rewind the Rider War one last time and create a timeline where the Rider War never happened and the Mirror Monsters didn't exist. From then on, Shiro resided in the Mirror World and spent the rest of his time living happily with his sister.

Kamen Rider Zi-O

It is hinted that Shiro might have had some involvement the restarted Rider War in 2019 shown in Rider Time: Ryuki. After Kamen Rider Odin was defeated again, his final words were to say "Yui" before disintegrating.

Gallery

Navigation

          Ryuki Logo.pngVillains

Kamen Riders
Masashi Sudoh | Jun Shibaura | Takeshi Asakura | Satoru Tojo | Mitsuru Sano | Kamen Rider Odin | Dark Shinji | Itsuro Takamizawa

Mirror Monsters
Spiders: Dispider | Mispider | Respider | Solospider
Zelles: Gigazelle | Megazelle | Negazelle | Omegazelle | Magazelle
Zebraskulls: Zebraskull Iron | Zebraskull Bronze
Boarders: Wildboarder | Shieldboarder
Biters: Zenobiter | Terabiter
Krakens: Bakraken | Wiskraken
Gulds: GuldThunder | GuldMirage | GuldStorm
Abyss: Abysshammer | Abysslasher
Buzzstingers: Buzzstinger Hornet | Buzzstinger Bee | Buzzstinger Wasp | Buzzstinger Broom | Buzzstinger Frost
Sheerghosts: Sheerghost | Raydragoon | Hydragoon

Other
Shiro Kanzaki | Hideyuki Kagawa | Hajime Nakamura

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