The Forbidden Fibers

The Forbidden Fibers (禁断の繊維) is the third episode of the first season of the 2019 fan-adaptation, Kamen Rider Infiniva. It is also the third and final episode of the three-parter Kill la Kill cross-over. It features the debuts of the Bachami, Bakuzan, Shinku and Shiroi Hero Prisms, and their respective forms when accessed by Infiniva, alongside Infiniva Sentōki.

Synopsis
Caught in one of the more major events of his life, Kei Sunado chooses to become Kamen Rider Infiniva (仮面ライダーインフィニバ) with his full heart, as he steels his resolve, helping the residents of the Kill la Kill-verse stranded in his world to fight against both the COVERS, and the mutants. The tides are slowly changing as he gains more forms, using them to his upper hand.

But there are two general-level mutants waiting in store for him...

Hero Prisms

 * Prism(s) Used:
 * Infiniva
 * Tsurugi, Shibari, Kanade, Saguru, Sentōki


 * Form(s) Used:
 * Infiniva
 * Infiniva Tsurugi, Infiniva Shibari, Infiniva Kanade, Infiniva Saguru

Cast

 * Kei Sunado (すなど・けい): Rihito Itagaki (板垣 李光人)
 * Aozora Hanabi (花火・青空): Kanna Hashimoto (橋本 環奈)
 * Samuel Suzuki (鈴木・サミュエル): Ryosuke Koike (小池亮介 Koike Ryosuke)
 * Dancho Koma (駒・団長): Kentaro Ito (伊藤 健太郎)
 * Alexis Takahashi (高橋・アレクシス): Gaku Oshida (押田 岳)
 * Alice Éclaire (エクレア・アリス): Moka Kamishiraishi (上白石 萌歌)
 * Dayangko Shabistari (シャビスタリ・ダヤンコ): Hikaru Takahashi (髙橋 ひかる)
 * Elizabeth Crys (クリス・エリザベス): Minami Hamabe (浜辺 美波)
 * Hattari Watanabe (渡辺・ハッタリ): Shun Nishime (西銘 駿)
 * Mithra Kizari (キザリ・ミスラ): So Okuno (奥野 壮)
 * Rose LeBlanc (ルブラン・ローズ): Aya Marsh (マーシュ 彩)

Cameos

 * Ryūko Matoi (纏 流子): Ami Koshimizu (小清水 亜美)
 * Satsuki Kiryūin (鬼龍院 皐月): Ryoka Yuzuki (柚木 涼香)
 * Ira Gamagōri (蟇郡 苛): Tetsu Inada (稲田 徹 Inada Tetsu)
 * Uzu Sanageyama (猿投山 渦): Nobuyuki Hiyama (檜山 修之)
 * Nonon Jakuzure (蛇崩 乃音): Mayumi Shintani (新谷 真弓)
 * Hōka Inumuta (犬牟田 宝火): Hiroyuki Yoshino (吉野 裕行)
 * Shirō Iori (伊織 糸郎): Yūji Ueda (うえだ ゆうじ)
 * Mitsuzō Soroi (揃 三蔵): Akio Nojima (野島 昭生)
 * Aikurō Mikisugi ((美木杉 愛九郎): Shin-ichiro Miki (三木 眞一郎)
 * Tsumugu Kinagase (黄長瀬 紬): Katsuyuki Konishi (小西 克幸)
 * Senketsu (鮮血): Toshihiko Seki (関 俊彦)
 * Mako Mankanshoku (満艦飾 マコ): Aya Suzaki (洲崎 綾)
 * Barazō Mankanshoku (満艦飾 薔薇蔵): Kenyu Horiuchi (堀内 賢雄)
 * Sukuyo Mankanshoku (満艦飾 好代): Yukari Fukui (福井 裕佳梨)
 * Matarō Mankanshoku (満艦飾 又郎): Ayumi Fujimura (藤村 歩) (via archive recordings)

Suit Actors

 * Kamen Rider Infiniva (仮面ライダーインフィニバ): Kanzaki Hajime (神前 元)
 * Tainted Crimson Mutant (テインテッド・クリムゾン・ミュータント): Watanabe Jun (渡辺 淳)
 * Demonic Omnisilk Mutant (デモニック・オムニシルク・ミュータント): Tsukagoshi Yasunari (塚越 靖誠)