Knights of the world, but I'm a weirdo at the beginning

Story of: Knights of the world, but I'm a weirdo at the beginningLu Zheng, who has lived in a parallel world for eighteen years, always thought that he had traveled to an ordinary world. Until one day on his way home from school, he encountered a monster that was eating people, and then he discovered that this world was hiding many creatures he was familiar with. Gurongi, Ophiino, Zerg... The reason why they could live peacefully in the past was because the Kamen Rider silently protected them in secret. Lu Zheng: I understand the truth, but why am I a weirdo at the beginning!