Jerga

Jerga (ジェルガ, Jeruga) was the general of the Gairadite Demon King Subjugation Army and King of Gairadite 2,000 years ago.

Personality
Jerga held an intense and raging hatred towards demons. Blinded by his hatred, he was incognizant of the fact that he had turned into the very evil he accused the Demon King of being. His madness and insanity had no end, not wanting to rest until every last demon was annihilated from existence. He claimed that his hatred was that of all the humans, however, he had no problem killing multiple humans if it meant getting his revenge.

History
Jerga was the Kanon's teacher, and the hero before him. Jerga held an deep grudge against demons after the death of his wife and child. On one occasion, the Demon King of Tyranny, Anos Voldigoad, came to Azeshion to advocate peace with Kanon, but Jerga interrupted their conversation and attacked Anos, only to get gravely injured.

Even after the wall was made and the Demon King died, Jerga's hatred did not change. He believed that the battle would not end until the Demon King was completely dead. So he set up the Hero Academy as a way to pass his resentment to his descendants. Kanon was strictly against the academy and its purpose, wanting peace with the demons instead. The tensions between the two almost resulted in a civil war between the humans, with each side having many allies. However, Jerga waited for Kanon to drop his guard, and had his allies kill him. In doing so, he made sure that his hatred could be passed on. He then altered the written history to make sure demons were viewed as cruel and evil, and even hid the fact that the Demon King willingly gave up his life to bring peace.

But he was still afraid that people would forget their hatred of demons. So, at the cost of his life, he transformed his root into two forms of magic. One is the magic  and the other one is the magic Root Womb &lt;Eleonore&gt;. He managed to fuse his own root into , resulting in anyone who uses it sharing his feelings of hatred and resentment towards demons.

Plot
After Diego is defeated and abandoned by his army, he casts &lt;Jerga&gt;, allowing Jerga to resurrect into a body made of Holy Magic. Lay attempts to kill him, but he explains that, as his body is made of holy magic, he can't be killed by the holy sword . Jerga then attempts to detonate all 10,000 of the Zeshia's with , but he is stopped by the fused Sasha and Misha. He waits until they run out of magical energy before trying again, only to be stopped by Anos who cast  to stop Zeshia's time. Anos quickly destroys Jerga's origin with , but Jerga immediately reforms. Jerga then uses  and  to forcibly drain the hope of the subjugation force to strengthen himself. After absorbing enough power, Jerga imbues himself with holy armor and sword. He attempts to kill the group but is distracted by Misa's . Jerga injures Anos, damaging his origin, but Anos immediately recovers, having healed his origin with . Jerga attack Anos again, letting it slip that he knows about .

The fight is interrupted by Lay, having gotten all 7 of his origins back. The fight continues. Lay cuts off Jerga's legs with Evansmana, shocking him, and Anos reveals that he summoned the castle Delzogade to the battlefield. Anos taunts Jerga. The living magic is then cut down by Anos with  and Lay with , losing his power. Anos then explains to him that while his hatred went into , his desire for peace went into Eleonore, leaving him in emotional conflict. Anos tells Jerga that he remembers killing his family and used  to reincarnate them. He then kills Jerga with , but gives him a one-shelled necklace and uses <Silica> on him as well, a way of saying he wishes him to reunite with his family after reincarnating.

Magic

 * &lt;Asc&gt;
 * &lt;Theo Trias&gt;
 * &lt;Jerga&gt;

Kanon
Jerga was willing to stake the future of humanity on Kanon, believing him to be the only one capable of defeating the Demon King of Tyranny.

Anos Voldigoad
Jerga utterly despises the demon race, especially the Demon King of Tyranny Anos Voldigoad, whom he blames for the death of his wife and child. Anos, in return, replies that Jerga wasn't the only one that experienced tragedy, as Anos was born from his mother's corpse after she was killed by humans.