Imma try to predict the end:
What if all that happened until now was one of her "Future prediction dreams" and once it ends, she wake up and realise she is on her last day as Genryuusai.
Then, in the end, when she is about to die, she say's something like "Bye, Im gonna live a dream life" or something and the manga ends. Now everything will happen again, but this time for real.
Idk but the finale being her on the bed, with Ryuuzen-san next to her, and she saying that and die while smiling seems a good way to end the manga x) Let's see