Responses
So it could be related to the people here somehow?
If she's there, then it's a Korean person wrote the book.
If she's not, the villain queen who somehow got books to help at the important moment?
PS. a European princess...
I don't understand why they isekai'd the author into her story when she's barely played any part in the events. You could remove her entirely and it would probably make no difference at all.