Kamen Rider: Building the Ark from the Start

Stories Where the Male Protagonist Transforms into a Tokusatsu Character in a Non-Tokusatsu World

No Kamen Rider, No Entry

Looking for books similar to Armored Warrior: The Campus Belle Stole My Trickster Driver from the Start. Are there any stories where someone transmigrates into a world without Kamen Rider, becomes an armored warrior, builds a driver, and shows off? No Ultraman, Armor Heroes, or Ben 10. I only want Kamen Rider, with no other franchises mixed in.

A Kamen Rider in Another World, Not the Kamen Rider World

For example, stories set in the Ultraman world or the Marvel Universe, preferably with a powerful protagonist. Armor Hero is fine too.

Kamen Rider in a Modern City, Not the Kamen Rider World, Just an Ordinary City

Any Stories About E From Kamen Rider Build?

Something related to Kamen Rider Build would work too.

Kamen Rider Stories Where the Protagonist Shows Off with Different Drivers