Remy Loa : girl, the Different World and the Book of Witchcraft

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

"Remi", a girls' high school student, was told to clean the school library warehouse due to poor test results.
During the cleaning, Remi accidentally found "Loa," a book with eye-catching words and words, and suddenly she was engulfed in light and blown away into another world.
When I noticed, Remi and Loa were in a place I had never seen before. There was an island floating in the sky, and there was another world "Lagnoa" where beautiful nature and magic and machines coexist.
Can I work with Loa to solve the mystery of this world and go back to the original world?