Mask: the Red Emperor Is Also a Weirdo

A man named Gu Yanwu accidentally came to the world of Kamen Rider Ryuki and got his own system. As a first-time novice reward, he had a non-existent red imperial knight driver, and even transformed into a weirdo prototype that was a Chinese dragon. And he could travel through various worlds at will and fight monsters to upgrade, redeem various cards and other items, resources and so on. Let's see what kind of people the protagonist can meet or what kind of stories happen in various worlds! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.