After I Transmigrated into a Book, I Became the Cannon-Fodder Senior Brother

[Two Male Leads, Top's Perspective, Cultivation in Another World, BE, Alternate Setting (Anything Goes)]

Note: This is a BE story. The two protagonists do not end up together.

Ye Fan accidentally transmigrated into a book as a villain who shared his name after criticizing the author of a novel. But he later learned from the System that he hadn't transmigrated into the novel he'd criticized, but into its fanfiction...