The Kamen Rider of the Underworld

Lucis transmigrates to a thrilling world on the other side, equipped with a cheat that lets him transform into a Kamen Rider. With power this absurdly convenient, it's just... fantastic!

Now, let me take a good look at the worlds I'm about to visit. Evil thoughts twist the gods, creating a tragedy that spans a thousand years. The war between the gods high in the heavens and the demons who dwell on the earth is about to end. A holy mother binds humanity with a beautiful wish, but not everyone needs beauty. A girl who has endured endless suffering without abandoning her purity eventually accepts her fate and sacrifices herself to save others.

...Wait, is this really the world on the other side? Why does it reek of the underworld from head to toe? Good thing I'm a Kamen Rider, or I'd be in real trouble.

Plans so far: heavily modified W, heavily modified Den-O, heavily modified Wizard, heavily modified Geats, heavily modified Build.

P.S. The Eushully world will be the main setting. Other worlds will be guest appearances.