Responses
Forgive me if I'm wrong but I think she was originally cayena, then she died and lived her second life in Korea where she read the book(had no memory of first life), then she either died or isekaied and got put back into cayena for her third life. And now she has the memories of her first life and the book(second life).
Sorry if it's confusing
Did she get isekaied or is she a time-traveller/regressor?