Kamen Rider Gaim (仮面ライダー鎧武（ガイム）, Kamen Raidā Gaimu) is a Japanese tokusatsu drama in the Kamen Rider Series, written by Gen Urobuchi. Kota Kazuraba must use his newfound powers as the titular hero to battle the mysterious Inves monsters as well as other rival Kamen Riders, all known as "Armored Riders" (アーマードライダー, Āmādo Raidā), in what is described by the show as a "Rider Sengoku Period" (ライダー戦国時代, Raidā Sengoku Jidai). Characters are aligned with each other as members of dance crews, or Beat Riders, and various organizations.