@Leviswifey
Spoiler!
So what I understood from the previous spoilers, ML became the Traveler this time, but the Book is hiding it as the story now revolves around FL. So both of them are Travelers but FL couldn't return to her world after completing the first story in the first chapter because ML stole the reward and made a story where they will end up together in the end. That's my understanding of the current plot. Basically FL is also a Traveler but with limited access to the Book, while ML is the Author/Traveler of the current plot of the Book.