The Legend of the Red King

Stories of Roa is essentially an isekai. It's a set of, at the moment, two series of books about young women who get transported into another world from Earth. The world is Roa, which has a medieval feel to it, but with more advanced ideas about science because of the magic of the world. There were Gods and Dragons at one point, but now both are lost to time and myth. How Laura came to Roa is unknown, but the Elders of the world know that she is key to saving everything, including her own world.