Grancrest Senki

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.

When tragedy strikes during a wedding that would bring together the Fantasia Union and the Factory Alliance, Siluca finds herself with no choice but to forge a new future for the world. With the aid of Theo, a knight errant with great potential, she will go against the world's order to achieve peace through the magical power of crests. And as Theo soon finds out, her methods are more than a little unorthodox!

(Source: VIZ Media)