FE3H is Record of Grancrest War (Grancrest Senki), change my mind.
The central story follows two individuals who cross paths amidst this renewed conflict: Grancrest Senki
Together, Theo and Siluca gather a loyal group of allies—including the warrior —and begin a campaign to unify the warring factions. Theo's humble nature and straightforward honesty allow him to earn the respect of both soldiers and rival Lords. FE3H is Record of Grancrest War (Grancrest Senki),
Peace seemed possible during the wedding of and Marinne Kreische , which would have united the two major factions: the Fantasia Union and the Factory Alliance. However, the ceremony was struck by the Great Hall Tragedy , a massive convergence of Chaos that summoned a Demon Lord who murdered both archdukes, reigniting the war. The Unlikely Alliance Peace seemed possible during the wedding of and
: A brilliant young mage who despises the greed of current Lords. After seeing Theo’s genuine desire to help others, she forces a contract with him, deciding to use her intellect to make him the ultimate leader who will end the Age of Chaos. The Path to the Grancrest
Humanity is protected by who possess Crests , magical sigils that allow them to suppress the Chaos. However, rather than uniting to purify the land, the Lords have spent generations fighting each other to steal Crests and expand their power.
: A wandering knight and "vagrant lord" with a simple goal—to liberate his homeland, Sistina, from a corrupt ruler. Unlike other Lords, Theo views his Crest as a tool to protect people rather than a means for conquest.