World of Diend

The World of Diend (ディエンドの世界) is the world where Daiki comes from, similar to the World of Blade due to the presence of Undead known as Roaches (ローチ). More specifically, it seems to be related to the film Missing Ace, due to being home to the three Ace Riders (even played by the same actors) and Jashin 14 (known as the Fourteen), characters exclusive to the film. But as the world is dominated by the Roaches and their leader Fourteen, the human populace is mostly brainwashed into a state of euphoria and conditioned to see Kamen Riders as disruptors of the peace, and anyone who disobeys the rules, even slightly, has their free will completely removed. The backdrop used to enter this world depicts a wanted poster with Diend's symbol on it in the foreground and a cityscape in the background. Within this A.R. World, Tsukasa assumes the role of a traveling salesman before being labeled a criminal. Daiki's treasure in his homeworld is freeing his brother from the control of Fourteen, only to learn he was not controlled at all.

Inhabitants

 * Junichi Kaito
 * Haruka Miwa
 * Shin Magaki
 * Jashin 14
 * Bossroach
 * Darkroaches