Grancrest Senki

The marriage of Alexis and Marrine is meant to end the war between the Fantasia Union and the Factory Alliance, but a violent surge of Chaos interrupts the ceremony and summons a demon lord that kills the leaders of both sides. Peace collapses, war returns, and the same Chaos continues spawning monsters and corrupting the land.

Traveling mage Siluca Meletes meets Theo Cornaro, a young warrior whose Crest can cleanse Chaos. Theo owns no territory or army, but he wants to free his home of Sistina from a tyrant. Siluca believes in that goal and forms a magical contract with him, beginning a campaign to turn an unknown fighter into a lord capable of gathering Crests and giving the continent another chance at peace.