I Stop Acting Human Starting With Kamen Rider OOO!

An original Kamen Rider story. The protagonist is a local, there is no System, and the author is a newcomer, so there may be some OOC.

A story about becoming a Greeed and traveling through different worlds.

Synopsis:

Coins from eight hundred years ago have resurfaced in the modern era, and the Greeed, seeking complete resurrection, have begun an intense battle for the coins against Kamen Rider OOO. To recreate the alchemy that made the Core Medals, An Chen declares, “I'm done being human, Hino Eiji!”

This is one of the author's fantasies, and one that everyone has imagined at some point. This fantasy world is sometimes governed by strict logic, and sometimes utterly chaotic. That's what fantasy is. Sometimes it comes to an abrupt end; don't be surprised. After all, fantasy is like a dream you could wake from at any moment: absurd and bizarre, yet utterly engrossing.

Dedicated to us, in all our chuunibyou glory.