The backdrop used to arrive in this world shows a city with police cars and Mount Hitoki in the background. Within this A.R. World, Tsukasa assumes the guise of a police officer with the talent of understanding and speaking the Gurongi language. The World of Kuuga was the first of the Nine Worlds the Hikari Studio traveled to, shortly after Tsukasa Kadoya became Kamen Rider Decade. Stepping outside, Tsukasa found himself in this world as a police officer while Kamen Rider Kuuga appeared to aid the police against two Gurongi. Rider War (episode).
Publication Information
- Decade : World of Kuuga
- Japanese : クウガの世界
- Version : Kamen Rider Decade Series
- Type : Nine Worlds
- Known as : A.R.World
- Season : Kamen Rider Decade
- Main View : Full Episod
Arriving in the World of Kuuga, Tsukasa took the guise of a policeman and watched Kuuga destroy a pair of Grongi, Ra-Dorudo-Gu and Me-Gyarido-Gi, before reverting to his human form, Yusuke Onodera. Tsukasa later destroyed Go-Baberu-Da as Decade, but was mistaken for a Gurongi by Yusuke and Ai Yashiro. When Yusuke and Ai arrived at the Hikari Studio to discuss this strange Gurongi, Tsukasa offered Ai his help in solving the mystery behind the Gurongi's female targets and the location of their lair.
On the foot of Mount Hitoki, the Grongi's Lair, Tsukasa revealed he used Ai as bait to lure out the remaining Gurongi, revealing their plan to revive their leader before ruining their game. While attempting to destroy the Gurongi, Decade was attacked by Kuuga, who revealed he knew about Decade's mission and will stop him at all costs. Natsumi pleaded for them to stop, recalling her dream in which Decade and Kuuga seemingly destroyed each other. A dimensional rift occurs, and their fight is interrupted by the appearance of Kamen Riders KickHopper and PunchHopper. The World of Kuuga
After fending off the Hoppers who disappeared into another dimensional rift, Yusuke reveals he was told of Decade by a mysterious man. When Ai and her task force gone to investigate Mount Hitoki, a black mist began to rise from within, signaling the revival of N-Gamio-Zeda. Resurrected by the dimensional chaos, he used his miasma to convert humans into Gurongi. While Yusuke saved Ai and took her to the hospital, Tsukasa fought the Gurongi alone.
A dying Ai requested Yusuke to overcome his angst and fight to protect everyone's smiles, and so Kuuga and Decade worked together to destroy the remaining Gurongi. N-Gamio-Zeda, in a last effort, absorbed all the Gurongi to power himself up, but he was ultimately overpowered by both Decade and Kuuga, who destroyed him with a combo attack. After returning to the hospital, Yusuke found that Ai had died and vowed to honor her dying wish, setting off on his own journey, joining the Hikari Studio with a mysterious white bat following him. Transcendence
Rider War
During the Rider War, though his world is destroyed, Yusuke still exists due to his traveling of the Nine Worlds. Even though he is destroyed by Decade in The Last Story, he and his world are restored, allowing him to aid in reviving Decade and defeating the newly formed Super Shocker once and for all.
Inhabitants:
Kamen Riders:
- Kamen Rider Kuuga
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Villians:
Gurongi:
