Kingdom of Concordia

The territory of the Azure Dragon was originally known as Blue Dragon. Contact with the Blue Dragon Crystal and its l'Cie had instilled the ability to command beasts in the otherwise unremarkable people of Rilochy, who became known as Dracobaltians. The kingdom expanded its sphere of influence from Rilochy to Roshana and met with the forces of the neighboring Dominion of Rubrum at the border between Roshana and Eibon Region. The dominion implemented a divide-and-conquer strategy, sending the royal units fleeing, reclaiming its territory. According to legend, the Dracobaltians asked for more power from the Blue Dragon Crystal and gained the ability to command wyverns. Unable to appreciate them as sentient beings, the dragons were slaughtered for food during shortages, and the Blue Dragon Crystal lost power.

Because the male progenitors of the Blue Dragon people had consumed dragons' flesh, the male descendants were cursed to turn into monsters themselves. The female descendants, unaffected by the curse, took over the country in the year 252 under the name Azure Dragon, a new Crystal that had appeared to restore the balance in Orience and replace the Blue Dragon Crystal. Concordia became a matriarchy.

The new Azure Dragon Crystal designated its l'Cie to create the Cursemire of Naraku and seal away the Dracobaltians for eternity, and the Kingdom of Dracobaltia and its Blue Dragon Crystal vanished from Orience. Realizing that the Dracobaltians had failed to develop their Crystal-State due to their lust for power, the Azure Dragon Crystal had its l'Cie establish a country: in the year 271, the l'Cie Cuprine authored the laws of the Azure Dragon and founded the matriarchal Kingdom of Concordia.

To defend the queen, Iunia formed a royal guard with the Five-Star Wardens at its head. Hespera constructed towns and villages that later became the foundation of the present-day Concordia. Finally, the l'Cie Vesta erected a palace in the land of Mahamayuri and declared it the royal capital.^{[note 1]} Once Concordia had laid the foundation of the kingdom, it set out to build up a military. Because the Azure Dragon Crystal had the same power as the Blue Dragon, Concordia formed its armed forces around monsters and wyverns, albeit with a different structure: whereas the Dracobaltian Army had had no clear chain of command, each military unit fighting on its own judgment, the Concordian Army assigned each unit to the command of the leaders of the Five-Star Royal Guard, each of whom answered directly to the queen, and the royal army adopted the use of military ranks common in other nations.

As Concordia solidified its military under the direction of the Five-Star Wardens, tensions with the dominion increased. In 317 Concordia dispatched a small unit to assault a city in the Eibon Region to test the strength of its dragon commands. Rubrum initiated a counteroffensive, and deployed troops from all over the dominion to the Eibon Region. The dominion legions dispatched a force of 40,000 troops to drive out the royal army. The Concordian Army deployed four mixed commands, each containing approximately 100 wyverns. Including reserve soldiers and monsters, the kingdom possessed a fighting force of 30,000. The dominion army suffered casualties in the face of the wyverns' power and, even after calling for reinforcements, barely held their ground. After more than a month of fighting, a succession dispute in Concordia erupted into civil war, and the kingdom's army withdrew.

Steeled through centuries of war, each Crystal-State had developed formidable fighting forces convincing each head-of-state of the possibility of unifying Orience under one banner. The waning of the Crystals' power drove the four state leaders to expedite their war efforts, even if extracting energy from the Crystals exacerbated their deterioration. Fearing the weakening of the Crystals to be permanent, each nation sought to annihilate the others. What became known as the Great Orience War began as a border dispute between the dominion and the Militesi Empire. Concordia launched an assault on Rubrum's rear guard, and the dominion responded by summoning the Verboten Eidolon, Leviathan. As the struggle continued, each nation's Crystal began deteriorating even more rapidly due to the replenishment the weapons, armor, and magic and through the creation of l'Cie. As the power of all four Crystals was waning, on Ventusmens IV in the year 359, the four nations ordered a ceasefire and began preparations for a peace treaty. Pax Codex prohibiting the use of l'Cie in war was drawn up in 361, and in 448 the four peristylia drew up a non-governmental pledge of non-aggression, known as the Fabula Pact.

As Milites annihilates the Lorican Alliance in the year 842 and turns its focus on invading the dominion, the kingdom lends its passive support to Rubrum. Concordia helps the dominion regain the strategically important Togoreth Stronghold, although the fort itself ends up destroyed in a battle between Vermilion Bird and White Tiger l'Cie. Afterward, the royal army proposes a joint offensive against the strategically located North Togoreth town of Mi-Go. The dominion Central Command is tempted, but the commandant is reluctant to reveal the dominion's strategies to the kingdom. Rubrum accepts the proposition with the condition that all legionaries and Agito Cadets participating in the mission refrain from using magic or from performing special squad maneuvers. Thanks to the assistance of its Concordian allies, Rubrum reclaims Mi-Go.

At the behest of the Azure Dragon Crystal, Queen Andoria travels to the imperial capital of Ingram and invokes the Fabula Pact, a peace agreement made between the four peristylia of Orience that grants a short-lived ceasefire before she is assassinated. The King of Concordia, whose title is more of a figurehead, schemed to overthrow the queen and restore the Blue Dragon to power. He assumes control of the nation and allies with the empire to retaliate against the Dominion of Rubrum for their supposed role in Andoria's death. The King of Concordia is frustrated to learn that the Queen Dragon, Soryu, being a l'Cie, obeys only Andoria and will listen to no one now that she is dead. Claes Celestia Misca Sancest, the queen's former aide, succeeds the queen as an Azure Dragon Secundus l'Cie and inherits her Focus.

The king's reign stood on a fragile political foundation, so he hoped the empire's aid would maintain his authority. The queen's assassination left the kingdom in disarray, and the Royal Army's mobilization effort does not proceed as planned. Concordia devises a strategy where the Five-Star Royal Guard would invade the dominion by air. The other units would trek to the border while they organized their ranks, then cross over into dominion territory once the Royal Guard had made their move.

The dominion airship fleet and its Agito Cadets engage the royal army in the First Battle of Judecca. The cadets summon Eidolons to annihilate the Concordian dragons. Soryu, the Azure Dragon Crystal Primus l'Cie, destroys them with her breath until the Vermilion Bird Crystal deploys its own Primus l'Cie, Zhuyu Voghfau Byot, to intercept her and draw her away from the rest of the battle. The fighting continues atop the clouds frozen by Soryu's chilling breath. Rubrum's Eidolons overwhelm Concordia's wyverns, even forcing the Azure Dragon l'Cie Celestia to retreat. The Royal Guard incurs enormous casualties, losing more than 1,000 dragons, making the kingdom unable to continue an invasion of this scope. When the dominion advances toward the royal capital, the kingdom is unable to mobilize enough forces to the defense. To supplement the dwindling royal forces, the king orders the seal on the Cursemire of Naraku broken to unleash the Dracobaltians on the dominion. However, this has virtually no effect on the battle's outcome.

Hearing of the casualties incurred by the Five-Star Royal Guard, Concordia's land units abandon the invasion and revise their strategy. Hoping to exploit the kingdom's loss of momentum, dominion legionaries deployed to the eastern front initiate a land-based offensive to break through the royal defenses and cross into Concordia. A special unit would provide backup by assaulting Kingdom Central Command and keep the royal army occupied while the dominion legions cross the border. Concordia pulls back, giving up all resistance along the border, and the dominion breaches it without suffering more than a handful of casualties.

The King of Concordia goes into hiding, but Class Zero catches him. The elite knight Yuzuki, who had accompanied the king, reveals the extent of the king's plans and the origins of the Dracobaltians before summoning one to eliminate the king once and for all. She presumably meets her demise when she seals Naraku to contain the Dracobaltians within.

Concordia capitulates to Rubrum although some pockets of resistance hold out longer than others. As Rubrum occupies the Militesi capital of Ingram and unites Orience under the banner of the Vermilion Bird Tempus Finis commences and word arrives in Akademeia that Concordia has likely fallen to the Rursus. Celestia arrives in Akademeia offering to help Class Zero get into Pandæmonium, the Land of Judgment that appears at the end of the world. In doing so she defies the Will of the Azure Dragon Crystal and turns into a Cie'th.

Class Zero ends the war and the Crystals lose power. It is unknown what becomes of Concordia in this new future where mankind is left to survive without the Crystals' blessings, but dragons seem to still thrive even after the Crystals' light fades.