(Volume One is about Ultraman. It is complete, though the order may be a little confusing due to the author's writing style.)
(Volume Two is about Kamen Rider. It is complete. The Build prequel, the Gaim movie world, Wizard, Gaim, Drive, and Kamen Rider Hibiki are all complete.)
(Volume Three is also about Kamen Rider. The Heisei Generations Forever side story and the Doctor's story are complete.)
(Volume Four is about Kamen Rider Build and is ongoing.)
This is the story of an ordinary high school student, well, supposedly ordinary, with a screw loose, in one of the mission worlds under an order-aligned, high-principled Lord God.
A note: This story differs from typical infinite-world novels. Don't apply the usual infinite-world conventions to it. Each mission world in this novel will be very long.