The Myriad Worlds: I Became a Kamen Rider

Reborn in another world, I was chosen to become a Kamen Rider.

Did I end up in the world of Geats?

That can't be right. Why am I still a student, and why do I have to take an exam on Kamen Rider history?

Wait, I can also travel through the heavens and become a player.

No, hold on. Kamen Riders are actually the biggest... in this world.