Record of Grancrest War. Volume 2 - Makoto Yotsuba

Did someone call for a badass mage to stop petty nobles from squabbling and face the real threat-unbridled Chaos?

In a world where the noble elite are supposed to fend off the threat of terrifying Chaos but instead engage in pointless petty squabbles, young mage Siluca Meletes dreams of bringing justice to the land. She finds an ally in Theo, a young knight with a bright future. But as Theo soon finds out, despite her righteous goal of world peace, her methods are more than a little unorthodox!

Siluca and Theo's master plan is put to its first test: a battle against the fearsome Lassic David, the lord of a nearby domain who only cares about conquest. Assisted by Balgary, the next king of the Cait Sith, an incredibly strong Artist named Aishela, and Irvin, Siluca's own Artist, these newly minted rulers of their domain must stand fast against the threat and pray that they survive the coming battle.