RIDER TIME: Kamen Rider Decade VS Zi-O

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***RIDER TIME: Kamen Rider Decade VS Zi-O*** (RIDER TIME 仮面ライダーディケイドVSジオウ, *Raidā Taimu Kamen Raidā Dikeido Tai Jiō*) is the 3rd part of *Kamen Rider Zi-O Spin-off: RIDER TIME*. It aired for 3 episodes at TTFC from February 9 to February 21, 2021.

## Synopsis

One day, suddenly, Sougo and Yusuke, Swartz, Ora, Heure and others are gathered on an isolated island in the sea───. In font of them who had no memory of why on earth, they were gathered here a masked man suddenly appeared. And, a king game betting on life and death, was started by the masked man!! Only one person survives at the end!! Who can survive this game!? And, what is the clown's identity───!?

## Characters

### Kamen Riders

* Kamen Rider Decade - Tsukasa Kadoya
* Kamen Rider Zi-O - Sougo Tokiwa
* Kamen Rider Diend - Daiki Kaito
* Kamen Rider Kuuga - Yusuke Onodera
* Kamen Rider Kiva-la - Natsumi Hikari

### Allies

* Misa Kuon
* Heure
* Ora
* Swartz

### Villains

#### Kamen Riders

* Kamen Rider Ohma Zi-O - True Sougo
* Another Ryuki - Unidentified person

## Episodes

1. "chapter1: The FIRST Stage"
2. "chapter2: The NEXT Stage"
3. "Final chapter: The FINAL Stage"

## Cast

### Main cast

* Tsukasa Kadoya (門矢 士, *Kadoya Tsukasa*): Masahiro Inoue (井上正大, *Inoue Masahiro*)
* Yusuke Onodera (小野寺ユウスケ, *Onodera Yūsuke*): Ryouta Murai (村井良大, *Murai Ryōta*)
* Heure (ウール, *Ūru*): Rihito Itagaki (板垣李光人, *Itagaki Rihito*)
* Ora (オーラ, *Ōra*): Ayaka Konno (紺野彩夏, *Konno Ayaka*)
* Swartz (スウォルツ, *Suworutsu*): Kentaro Kanesaki (兼崎健太郎, *Kanesaki Kentarō*)
* Misa Kuon (久遠ミサ, *Kuon Misa*): Rena Takeda (武田玲奈, *Takeda Rena*)
* Yakuza-style man: Kazuki Namioka (波岡一喜, *Namioka Kazuki*)
* Housewife: Metal Yoshida (吉田メタル, *Yoshida Metaru*)
* Old man: Moro Morooka (モロ師岡, *Morooka Moro*)
* Narutaki (鳴滝, *Narutaki*): Tatsuhito Okuda (奥田達士, *Okuda Tatsuhito*)
* Sougo Tokiwa (常磐ソウゴ, *Tokiwa Sōgo*): So Okuno (奥野 壮, *Okuno Sō*)

### Voice cast

* Diend (ディエンド, *Diendo*): Kimito Totani (戸谷公人, *Totani Kimito*)
* Ohma Zi-O (オーマジオウ, *Ōma Jiō*): Rikiya Koyama (小山力也, *Koyama Rikiya*)
* Others: Toru Omura (大村亨, *Ōmura Tōru*), Yuki Anai (穴井勇輝, *Anai Yūki*), Kazumi Komine (小峰一己, *Komine Kazumi*), Ayaka Maekawa (前川綾香, *Maekawa Ayaka*)

### Suit actors

* Kamen Rider Decade: Hirokazu Iwakami (岩上弘数, *Iwakami Hirokazu*)
* Kamen Rider Zi-O: Kazuya Okada (岡田和也, *Okada Kazuya*)
* Kamen Rider Kuuga: Ryohei Sakai (坂井良平, *Sakai Ryōhei*)
* Kamen Rider Diend: Kai Nakayama (中山甲斐, *Nakayama Kai*)
* Kamen Rider Kiva-la: Hokka Takasaki (高嵜百花, *Takasaki Hokka*)
* Another Ryuki: Daisuke Sato (佐藤太輔, *Satō Daisuke*)

## Staff

* Original: Shotaro Ishinomori
* Screenplay: Toshiki Inoue
* Director: Satoshi Morota
* Music: Shuhei Naruse, Kotaro Nakagawa

## Music

### Theme song

* "INSIDE-OUT DECADE ver." by Tsukasa Kadoya (CV: Masahiro Inoue) & Sougo Tokiwa (CV: So Okuno)
	+ Lyrics: Shoko Fujibayashi
	+ Composition & Arrangement: Shuhei Naruse
	+ Theme Song Produce: avex trax

### Soundtrack

*Main article: MASKED RIDER DECADE: COMPLETE CD-BOX*
## Production

On October 31, 2020, TELASA announced that they will be collaborating with TTFC for a new project, releasing a teaser with a masked man. More details would come out on December 20, 2020.

On December 20, 2020, following the airing of *an episode of Kamen Rider Blades* at TTFC, *RIDER TIME: Kamen Rider Decade VS Zi-O* and *RIDER TIME: Kamen Rider Zi-O VS Decade* were announced to air for 3 episodes each, starting from February 9, 2021. The first would air at TTFC, while the second would air at TELASA. To commemorate the release, the first 9 episodes of *Zi-O* and the first 16 episodes of *Decade* started streaming at TTFC for a limited time from March 31, 2021.

Both series premiered on February 9, 2021.

## Home media

The web series was released on both DVD and Blu-ray on September 8, 2021.

DVD coverCollector's Pack Blu-ray cover
## Notes

* The series is subtitled ***Decade Mansion Death Game*** (ディケイド館のデス・ゲーム, *Dikeido Yakata no Desu Gēmu*).
* The web series marks:
	+ the debuts of Robot Sougo, Misa Kuon, A.R. World Yusuke, A.R World Heure, A.R. World Ora, A.R. World Swartz, and True Sougo.
	+ the only appearance of the new Another Ryuki.
	+ the returns of Yusuke Onodera and Natsumi Hikari since their last appearances in *MOVIE War 2010* and the return of Narutaki since his last appearance in *Kamen Rider Taisen*.
	+ the deaths of Yusuke, Ora and Swartz.

## External links

* Official website
* Official website - TV Asahi
* Official Twitter account

## See also

* *Kamen Rider Zi-O Spin-off: RIDER TIME* - *Kamen Rider Zi-O* spin-off series
	+ *RIDER TIME: Kamen Rider Shinobi* - First part
	+ *RIDER TIME: Kamen Rider Ryuki* - Second part
	+ *RIDER TIME: Kamen Rider Zi-O VS Decade* - Fourth part

## References

1. ↑ https://www.kamen-rider-official.com/news\_articles/1104
2. ↑ https://twitter.com/telasa\_jp/status/1322381530875002887
3. ↑ https://www.kamen-rider-official.com/news\_articles/1017
4. ↑ https://www.kamen-rider-official.com/news\_articles/1018
5. ↑ https://www.toei-video.co.jp/special/zi-o/