As a fan of online literature, I can tell you some knowledge about online literature. According to what I know, changing the subsequent light novels without authorization will usually face the problem of copyright violation, which may lead to copyright disputes and the publication of the novel. This was because in the field of light novels, the copyright was usually owned by the publishing company or the online platform. If the content of the subsequent novels was changed without authorization, it might violate the rights of the copyright owner. Of course, not all light novels that changed the follow-up without permission would face such problems. Some authors might negotiate with the copyright owner to obtain authorization to change the content of subsequent novels to avoid copyright infringement. However, this required the author to have a certain level of legal awareness and negotiation skills. Therefore, if you want to change the content of the light novel, it's best to understand the copyright-related laws and regulations first and negotiate with the copyright owner as much as possible to obtain authorization.