Constance Verity Saves the World

"In her Last Adventure, Connie successfully became an ordinary person. People warned her it would be boring, and they were right. That's exactly why Connie loves it. But there's an Adventurer-shaped hole in the cosmos now, and a lot of interested parties eager to fill it. Not all of those candidates are fit for the role, and if The Adventurer falls into the wrong hands, it can lead to chaos and destruction. Constance still has all the skills of her old life, but she's no longer the chosen one. Yet when the fate of the world is at stake, she sets off, reluctantly, to keep the forces of evil from stealing the destiny she abandoned"--