This High Fantasy Doesn’t Make Historical Sense

A Western fantasy magic-world transmigration light novel with no System. The tone is light, the focus is on everyday life, there is little fighting, and there is no romance. Something seems off about this Western fantasy world. Reina, a history teacher, fainted while teaching in class and transmigrated to another world, automatically gaining the position of librarian at the Astor Library. From the start, she landed on a vast grassland, starving and penniless, with nothing but a copper identity token. She met a powerful mage and latched onto him, though in a rather forceful way. All she had to do in return was help out a little. Later, she returned to her proper job at the Astor Library, gathering information about this world from the people who came and went to borrow books. As she lived in this world, she gradually discovered just how unusual it was. “This political structure could never hold together.” “This magic has evolved without any logic.” “The date this castle was built doesn’t add up.” “Why would something like this exist in this era?” How will Reina survive in this world that defies reason?