|This article is about a/an episode in Kamen Rider Ryuki.|
The Twentieth Birthday (２０歳の誕生日 Hatachi no Tanjōbi) is the forty-fifth episode of Kamen Rider Ryuki. This episode finally reveals a shocking revelation about Yui Kanzaki's past and the origins of the Mirror Monsters.
- Shinji realises that Yui is fading but doesn't believe it at first. However, Yui realizes it herself later and begins to panic, and she calls Ren to pick her up.
- ORE Journal is seized due to the failure of the Mirror Monster scoop. However, Chief Editor tells Shinji that as long as his PC is in hands, the ORE Journal will continue to exists.
- A child version of Yui appears inside the mirror, warns present Yui that on the next 20th birthday, she'll be disappeared.
- Reiko orders Shimada & Megumi to spy on Kitaoka.
- Asakura tells Tojo that he was really the one that killed Mitsuru.
- One of the Sheerghosts begins to multiply, creating thousands of them.
to be added
- Shinji Kido (城戸 真司 Kido Shinji): Takamasa Suga (須賀 貴匡 Suga Takamasa)
- Ren Akiyama (秋山 蓮 Akiyama Ren): Satoshi Matsuda (松田 悟志 Matsuda Satoshi)
- Yui Kanzaki (神崎 優衣 Kanzaki Yui): Ayano Sugiyama (杉山 彩乃 Sugiyama Ayano)
- Shiro Kanzaki (神崎 士郎 Kanzaki Shirō): Kenzaburo Kikuchi (菊地 謙三郎 Kikuchi Kenzaburo)
- Shuichi Kitaoka (北岡 秀一 Kitaoka Shūichi): Ryohei (涼平 Ryōhei)
- Goro Yura (由良 吾郎 Yura Gorō): Tomohisa Yuge (弓削 智久 Yuge Tomohisa)
- Takeshi Asakura (浅倉 威 Asakura Takeshi): Takashi Hagino (萩野 崇 Hagino Takashi)
- Satoru Tojo (東條 悟 Tōjō Satoru): Jun Takatsuki (高槻 純 Takatsuki Jun)
- Daisuke Okubo (大久保 大介 Ōkubo Daisuke): Kanji Tsuda (津田 寛治 Tsuda Kanji)
- Nanako Shimada (島田 奈々子 Shimada Nanako): Hitomi Kurihara (栗原 瞳 Kurihara Hitomi)
- Megumi Asano (浅野 めぐみ Asano Megumi): Chisato Morishita (森下 千里 Morishita Chisato)
- Sanako Kanzaki (神崎 沙奈子 Kanzaki Sanako): Kazue Tsunogae (角替 和枝 Tsunogae Kazue)
- Yui Kanzaki(Child): Miho Koseki (小関 美穂 Koseki Miho)
- Shiro Kanzaki(Child): Yuki Hirano (平野 勇樹 Hirano Yūki)
- Girl: Nonoka Imaizumi (今泉 野乃香 Imaizumi Nonoka)
- Sheerghosts (シアゴースト Shiagōsuto, Voice): Hiroyuki Shibamoto (柴本 浩行 Shibamoto Hiroyuki), Shigenori Sōya (宗矢 樹頼 Sōya Shigenori)
- Cards used:
- Survive Rekka, Shoot Vent
- Final Vent
- Shoot Vent, Final Vent
- Strike Vent
- Weapons/Powers summoned:
- Drag Visor-Zwei, Ryuki Survive Shoot Vent
- Giga Launcher, End of World
- Dest Claws
- Advent Card appeared before episode's preview:
- Survive Mugen
- Odin makes his first appearance since The Battle Ends.
- This is the First time Reiko doesn't appear in an episode.
- Despite the Survive Mugen card being shown before the next episode's preview, it was never used in the series.
- This episode aired alongside Ninpu Sentai Hurricaneger episode 43, Scroll 43: Super Fusion and Big Clash.
- The DVD Release of Kamen Rider Ryuki Volume 11 features episodes 41-45.
- The Blu-ray Release of Kamen Rider Ryuki Volume 3 features episodes 35-50.