序章 末世起始之日

Prologue: The Day the End of the World Begins

The virtual character Bugster from "Kamen Rider Ex-Aid" suddenly invades the real world, and a game called "Kamen Rider Chronicles" that is completely different from the one on TV begins. In order to survive, the people in the real world can only continue to conquer the game...

《假面骑士Ex-aid》里的虚拟角色Bugster突然入侵了真实世界，一场与电视中截然不同的《假面骑士编年史》游戏开始了，真实世界中的人们为了生存下去，只能不断地将游戏攻略下去。。。。。。。