would have been so good if she's the og and not a reader

That's what I thought too. She had a great character establishment, introducing isekai ruined that setting

right? being isekai-ed, knowing the plot and who's who, takes away the challenge. yes, the story is good, but it would have been even better if she were the og, facing and conquering all the challenges from scratch. not some isekai-ed protagonist then wondering why the story changed or why does every male leads is in love with her and not with the og fml