Anime: Fire Emblem 1x2k66

Once, in a time before the first histories were recorded, there existed a land known as Saint Akanea, founded by the great hero Anri. Surrounded on all sides by seven other great nations, the land of Akanea coexisted in peace and harmony with its neighbours for many years. Then, the three gods of discord, madness and war sent Medius, Master of the Dark Style and leader of the country of Durhua, to forces with Garnev, the ruler and supreme priest of Khadin. The armies and strongholds of Akanea were no match against their combined might and, despite a valiant resistance, the land was soon consumed by the black tides of darkness. However, Medius would soon learn to rue the day he conquered Akanea. For the spirit of the land could not be extinguished while the fires of freedom continued to burn in the hearts of the Akanea people. Not while a hero still breathed in whose veins the blood of Anri yet flowed. With a enchanted sword Falcoin in his hands. Prince Mars would rally the people and begin a crusade to liberate Saint Akanea, cutting a bloody swath of vengeance towards the master of Durhua. This is how that story begins...

Source: Animenfo