Kamen Rider Zangetsu -Gaim Gaiden-

Kamen Rider Zangetsu Stage -Gaim Gaiden- (舞台『仮面ライダー斬月』 -鎧武外伝-) is the upcoming theater play focusing on the character of Takatora Kureshima (Kamen Rider Zangetsu/-Shin), a part of Kamen Rider Gaim Gaiden, a series of releases that each serve as a spin-off of a Kamen Rider from Kamen Rider Gaim, featuring unseen stories which took place during the show.

Synopsis
Takatora Kureshima/Kamen Rider Zangetsu visits a former Yggdrasill Corporation experimental project site located in the poverty and conflict stricken Republic of Torchia. He revisits the site for the first time in 8 years due to an incident that occurred in said site. He was attacked by surprised and falls into a giant hole, which he discovers an underground city.

This underground city is the most dangerous place in the republic, in which many young men are killed defending themselves while trying to survive. These men use Lock Seeds and Drivers to transform into Armored Riders. Because of his fall, Takatora loses his memory. He's helped by the leader of the Orange Ride, one of the teams in this underground city. He suddenly sees another Rider and shocked by his amazing power, he realized that this Rider is Zangetsu.

Those around Takatora try to help him regain his memory. Unbeknownst to them, there are cameras hidden all around the underground city. The ones behind the cameras is responsible for the conflicts in the city. One man in particular is seeking revenge on Takatora for a specific reason...

Team Orange Ride

 * Paimon
 * Gushion

Team Baroque Red

 * Berito
 * Ose

Team Green Dolls

 * Masahito Chinmiya
 * Kagiomi Chinmiya

Lockseeds

 * Locks Used:
 * Zangetsu:
 * Melon, Kachidoki
 * Proto Gaim
 * Proto Baron
 * Proto Ryugen
 * Proto Gridon
 * Proto Bravo
 * Arms Changes:
 * Zangetsu:
 * Melon, Kachidoki
 * Proto Gaim
 * Proto Baron
 * Proto Ryugen
 * Proto Gridon
 * Proto Bravo

Cast

 * Takatora Kureshima (呉島 貴虎): Yuki Kubota (久保田 悠来)
 * Aimu (アイム): Keigo Hagiya (萩谷慧悟)
 * Paimon (パイモン): Dai Goto (後藤 大)
 * Gushion (グシオン): Keito Takahashi (高橋奎仁)
 * Gurashya (グラシャ): Atsuki Masuko (増子敦貴)
 * Berito (ベリト): Kyohei Chida (千田京平)
 * Ose (オセ): Rui Tabuchi (田淵累生)
 * Foras (フォラス): Ketsuya Uno (宇野結也)
 * Yukisou Belial Granstein (雪叢・ベリアル・グランスタイン): Shota Onuma (小沼将太)
 * Masahito Chinmiya (鎮宮雅仁): Haruki Kiyama (丘山晴己)
 * Kagemasa Chinmiya (鎮宮影正): Motohisa Harashima (原嶋元久)
 * Kagiomi Chinmiya (鎮宮鍵臣): Hiroo Otaka (大高洋夫)