The Invasion Begins with the End of the World

The Invasion Begins with the End of the World (世界のおわり はじまる侵略) is the twentieth episode of Kamen Rider Gaim.

Synopsis
Takatora shows Kota the truth behind Helheim Forest, at the same time Kaito would learn the same thing from Ryoma, Sid, and Yoko. Meanwhile in Zawame City, more Inves invade and it's up to Mitsuzane and Zack to stop them.

Plot
akatora guides Kouta to an ancient city deep inside Helheim Forest, revealing that the place must be the home of an alien civilization that was destroyed when the forest's plants had spread through it, transforming all life into Inves after they ate the fruit. Meanwhile, Ryoma reveals this information to Kaito, as well, and adds that the Yggdrasill Corporation is just a front to cover their real purpose, which is to prevent the Helheim Forest from taking over the world. Kaito also discovers that the Yggdrasill Corporation is using the sacred tree from Mai's family's shrine to open a Crack into the Helheim Forest, much to his anger, and Ryoma reveals that the tree is not of this world, thus making it necessary for their goals. Elsewhere, Armored Rider Knuckle defeats some Inves, but fails to protect some passerby from being infected, when Oren and Jonouchi appears to try to turn the public against him, just to be interrupted when more Inves appear. Back at Helheim Forest, Takatora claims that should Yggdrasill fail to stop the plants' invasion, they could at least buy around ten more years for mankind and only those capable to fight it must know the truth until the last moment in order to prevent further chaos in the world, but Kouta disagrees. When more Inves appear to fight them, Zangetsu Shin defeats the monsters by himself, as Gaim is unsure about fighting them, knowing that they were once ordinary living beings. When Ryoma finishes his explanation, Kaito claims that instead of just protecting the weak, they should take advantage of the situation to ensure that only the strong survive, and Ryoma, Sid and Yoko all reveal that they have the same intent, despite the Yggdrasill Corporation's goals in mind, welcoming him among their ranks.

Cast

 * Kota Kazuraba (葛葉 紘汰): Gaku Sano (佐野 岳)
 * Mitsuzane Kureshima (呉島 光実): Mahiro Takasugi (高杉 真宙)
 * Kaito Kumon (駆紋 戒斗): Yutaka Kobayashi (小林 豊)
 * Mai Takatsukasa (高司 舞): Yuumi Shida (志田 友美)
 * Zack (ザック): Gaku Matsuda (松田 岳)
 * Peco (ペコ): Saku Momose (百瀬 朔)
 * Chucky (チャッキー): KANON
 * Hideyasu Jonouchi (城乃內 秀保): Ryō Matsuda (松田 凌)
 * Oren Pierre Alfonzo (凰蓮・ピエール・アルフォンゾ): Metal Yoshida (吉田メタル)
 * Yoko Minato (湊 耀子): Minami Tsukui (佃井 皆美)
 * Takatora Kureshima (呉島 貴虎): Yuki Kubota (久保田 悠来)
 * Lock Dealer Sid (錠前ディーラー シド): Kazuki Namioka (波岡 一喜)
 * Ryoma Sengoku (戦極凌馬): Tsunenori Aoki (青木玄徳)
 * Genesis Driver Equipment Voice (ゲネシスドライバー各種アイテム音声): Shin-ichiro Miki (三木 眞一郎)
 * Sengoku Driver Voice (戦極ドライバー音声), Lockseed Voice (ロックシード音声): Seiji Hiratoko (平床 政治)
 * Narration (ナレーション): Hōchū Ōtsuka (大塚 芳忠)

Lockseeds

 * Lock Used:
 * Gaim:
 * Orange
 * Ryugen:
 * Budou
 * Bravo:
 * Durian
 * Knuckle:
 * Kurumi
 * Zangetsu Shin:
 * Melon Energy


 * Arms Change:
 * Gaim:
 * Orange Arms
 * Ryugen:
 * Budou Arms
 * Bravo:
 * Durian Arms
 * Knuckle:
 * Kurumi Arms
 * Zangetsu Shin:
 * Melon Energy Arms