Victoria of Many Faces, Vol. 1 (light novel) — SYUU

Molded from childhood to be a topflight covert operative, Chloe spends her days carrying out secret missions for the kingdom of Hagl. But when she discovers that her boss has been manipulating her, she assumes the identity of a woman named Victoria and flees the country, turning her back on everything she knows for a chance at the normal life she's always dreamed of. Fortunately, life in the neighboring kingdom of Ashbury proves far more fulfilling than Victoria could have ever imagined, thanks in no small part to Nonna, an abandoned girl she takes in. And even though Victoria has sworn off being a spy, the skills she cultivated during her career pay off in surprising ways, from landing her a new job to helping her make colorful acquaintances. As more people take notice of her extraordinary talents, however, her former employer comes knocking, and the world she's worked so hard to build begins to fall apart…