Azesion-Dilhade War

Azesion-Dilhade War, as unofficially titled in this wiki, is a war that occurred between the human continent of Azesion and the demon kingdom of Dilhade. The conflict was orchestrated by Commander Jerga in an attempt to exterminate demonkind, but it was stopped by Anos Voldigoad and his allies before it could escalate into an all-out war.

Prelude
After the Great War ended with the Demon King Anos' sacrifice, magical barriers were erected to isolate the four races so that their hatred would disappear in due time. Knowing that the Demon King would return, Jerga founded the Hero Academy to pass on his hatred to future generations. He falsified the events that occurred, such as the Hero Kanon slaying the Demon King and raising the walls to protect the allied races from demon retribution. However, history books alone wouldn't be able to pass on the hatred they felt, so Jerga split his source into two magics: Jerga and Eleonore. As magic, Jerga instilled his hatred into the hearts of those who used Aske, while Eleonore was used to raise an army of cloned heroes.

Many supported Jerga due to the atrocities the Demon King committed during the war, but Hero Kanon opposed this since he was aware of the Demon King's true benevolence, so Jerga's supporters killed him as a result. However, the hero was able to fake his death and move to Dilhade, whose citizens were more understanding.

His plan was to create a phony Demon King, Avos Dilhevia, to take the full brunt of humanity's hatred. He used Evansmana to sever Anos' fate as the reincarnated Demon King of Tyranny, completely erasing his name from history. Those who could not forget moved away from Dilhade and remained quiet until it was over, while the Hero Academy simply believed he had changed names. As part of his plan, six of the Seven Demon Elders willingly ceded control of their bodies to Kanon's other sources. With his remaining source, Kanon would reincarnate throughout the years as he made counter-plans of his own.

Declaration of War
Two thousand years later, when the Demon King was expected to return, the Demon King Academy and the Hero Academy held an educational exchange. While Dilhade saw this as a learning opportunity, Azesion used this opportunity to humiliate the visiting demon students and create justification for war. At the same time, Lay Grandsley, Kanon's latest reincarnation, sent the remaining three Demon Elders under his control to Gairadite. Together, they attacked the hidden temple where Evansmana was enshrined and reclaimed the holy sword, giving Diego his highly coveted justification.

Lay accelerated the war because he intended to die in place of Anos. That's why he took command of the demon army as "Avos Dilhevia". He felt like Anos had already sacrificed enough, and it wouldn't be fair to take him away from the peaceful future he made. Before the big battle, he asked for half of Misa's one-shell necklace due to a popular legend stating that it could reunite lovers in the afterlife.

Aftermath
Diego is sentenced as a war criminal for cutting off his adjutant's arm when he disagreed with Diego. Despite achieving their goal of killing the Demon King of Tyranny and making the Demon Army retreat, Diego called for the continuation of war until their enemies were annihilated.

Ninety percent of the people who had their hope forcibly drained by Jerga make a full recovery, while the remaining ten percent are in stable condition. His actions are erroneously believed to be the false Demon King of Tyranny's, making him a symbol of fear in this age as well. To counteract this false belief, Anos and Lay planned to reveal the truth about Avos Dilhevia during the Demon King Reordination Ceremony, while conducting a story on how Hero Kanon and the true Demon King fought together to defeat the fake Demon King.