You're the Kamen Rider

Synopsis:

I'm Starmigo, an Ultra Warrior.

Yes, you heard that right. I'm an Ultraman! I don't know why I ended up in a world with no Ultraman or monsters, and my body has even undergone some strange changes, but this world is wonderful. There are no monsters or disasters, and I'm perfectly happy with how things are.

Oh, right, I was also taken in by a suspicious (?) digitized human. He and his half-baked (hey!) partner are really nice to me, and so is the lovely Akiko. I like being a family with them and living a peaceful life that only gets a little noisy now and then.

When I found out that monsters had appeared in Fuuto, I was furious. I rolled up my sleeves, ready to deal with them, only to see the digitized human and his half-baked partner combine and transform into Kamen Riders!?

...So you two are the protagonists. My apologies.

In this world, full of Kamen Riders and villains, how could a righteous Ultra Warrior like me stand by and do nothing? But every time I was about to step in, I discovered that the villains all had their reasons. They were just pitiful humans, too!

All right, all right. I'll save the ones who repent and beat the bad ones to death!

I just didn't expect that after finally saving these villains, one after another they'd confess their love to me!?

No way! My heart belongs only to fighting!

After finally dealing with the monsters in this world, I somehow got transported to a world with a Book of Omniscience. And there were bad guys there, too!

Then there was the world with the Sky Wall, the world of the Sugar Man guy, the world of the