I marked this as spoiler just in case. But this is purely speculation.
The ‘author’ will be the key to everything. Since this will be both of the main characters last life / story. I feel after a couple reincarnations Ceilca (The Grand Witch) set this library up to record her deaths and rebirths from beginning to end in hopes on her last life, it will come in handy and save them another tragic death. The reincarnated author will be there for the gaps in plot that only she knows. And will serve as a cheat sheet for the fl to regain her powers while also figuring out the most effective method of saving the ml. Since “technically” the author would know bc this is all in a world she “thinks” she made up. But it’s really a character in a novel that is currently been rewritten or written again by a new author aka ( the author of this story ) but this time with all the pieces to give the main characters a happy ending.
I marked this as spoiler just in case. But this is purely speculation.
The ‘author’ will be the key to everything. Since this will be both of the main characters last life / story. I feel after a couple reincarnations Ceilca (The Grand Witch) set this library up to record her deaths and rebirths from beginning to end in hopes on her last life, it will come in handy and save them another tragic death. The reincarnated author will be there for the gaps in plot that only she knows. And will serve as a cheat sheet for the fl to regain her powers while also figuring out the most effective method of saving the ml. Since “technically” the author would know bc this is all in a world she “thinks” she made up. But it’s really a character in a novel that is currently been rewritten or written again by a new author aka ( the author of this story ) but this time with all the pieces to give the main characters a happy ending.