My name is Bai Ye, and I'm a time traveler. My only dream is to find my lost sister in this world where Kamen Rider actually exists, and then lie down. Until that day, the whole world heard that voice—

[Announcement: Bai Ye is the darkest demon king who will destroy the world in the future, or the ultimate hero who will save everything.]

Overnight, I went from being a tokusatsu enthusiast who just wanted to slack off to a "future demon king" that the whole world wanted to study, control, or hunt.

The Dragon Knight Academy wants to imprison and observe me, considering me the most unstable "Ω (Omega)-level singularity"; the weirdos lurking in the shadows see me as a competitor that must be smothered, or a perfect chess piece that can be used.

Fortunately, my memories from my past life are my greatest asset. I know every knight's weakness, every strange creature's origin. And this blank dial in my hand, a table that holds the entire history of knights, and that enthusiastic servant who constantly "congratulates me," are my only means to overturn the chessboard.

By gathering the power of the nineteen main riders of the Heisei era, I will be qualified to be crowned king.

But I have only one goal - before I become the real "King", I want to find the man who calls himself "World Destroyer" and find out the whereabouts of my sister!

The enemy thought they controlled the script, but little did they know that I was the only one who spoiled the plot.

So the question is -

When a "devil king" who knows all the plots starts to act as the "protagonist" himself, how interesting will the world become?