Kamen Rider: I'm Just a Younger Brother

As soon as Zuo Jianchen came to the world of Kamen Rider, he was bound by a ** system, which forced him to be the younger brother of each main rider. But for the sake of his own life, he was 'forced' to become... A younger brother. Although he is just a younger brother... But after having different exclusive drives from each world, let alone being a younger brother, he can be regarded as a *. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.