Kamen Rider: Age of All Riders

In the year 2500, the earth underwent a sudden change, and 70% of the creatures on the earth turned into monsters. In 2506, the number of normal creatures on the earth was less than 25% of what it was before the end of the world. This year, the "Knight System" was invented. With the invention of the Knight System and the birth of mass-produced knights, a large amount of land was recovered, and finally four steel cities were established. In order to ensure the recovery of territory and the reproduction of the population, the Knight Professional Department was established... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.