
Whats wrong with Beatrice how did she and up so different from the original story?

I have two theories and a half.
One, just like Raeliana, Beatrice is also from the real world.
Two, maybe in the original novel there was a hidden side to the story which we or SHE (Rae) didn't know of, maybe something like, Beatrice killed Rae originally so she could meet Noah or something.
Maybe even both? A hidden side of the novel that Beatrice was originally from another world AND killed Rae to meet Noah. And maybe in the original novel, Raeliana was supposed to be the one who ends up with Noah, but Beatrice who secretly came from another world changed that to make herself the protagonist, therefore there was a hidden side to the original novel which wasn't shown to their readers.
Wow these theories seem legit to me

I'm so upset this was my favorite manga it started off so good and it was so different from everything else. Everything about it the atmosphere the way they talked the art it was all so sweet and real. And to end it without proper closure and making everything abrupt and not make sense is so weird???
Anyone who's read the novel how different is this from the novel? Like what's changed?