The Ultimate Villain in the Knight World

I unexpectedly find myself in the world of a Kamen Rider Den-O movie.

I obtain the Strongest Villain Rider System,

and my mission is simple: become a villain

and defeat every Kamen Rider on the side of justice.

From the start, I get the belts of Gaoh, Yuuki, and Negative Den-O.

My goal is to defeat every Rider and establish an organization of my own.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.