虛淵玄
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 , in what is described by the show as a . Characters are aligned with each other as members of dance crews, or Beat Riders, and various organizations.