Great War

The Great War is a war that took place 10 years prior to the events of Tales of Vesperia. The war was fought between the Entelexeia, a wise, long-living race that keep the world of Terca Lumireis's amount of aer in balance, and the humans.

The War's Uprising
The humans of Terca Lumireis use a technology known as blastia, which are fueled by aer and were created by the Geraios civilization, a civilization of Kritya, who can communicate with the Entelexeia. The humans greatly favored the convenience of the blastia.

One day, a Krityan man known as Hermes invented the Hermes blastia, which was more powerful than the traditional blastia and absorbs several times as much aer. The combined aer consumption of the ever-popular traditional blastia and the testing of the Hermes blastia through the aer levels to a catastrophically low amount. If the level of aer wasn't restored back to normal, it could awaken an apocalypse the Geraios named the Adephagos.

Seeing that the Adephagos was awakening, the Geraios built the Enduring Shrine of Zaude. This shrine was practically a gigantic Barrier Blastia capable of shielding the entire world from the Adephagos. After building it, the entelexeia, Krones, lifted up the city and houses what is now present day Myorzo.

As for the entelexeia, they decided to destroy the source of the mass aer consumption, the blastia, along with the humans, as to prevent the creation of more blastia. The humans, treasuring their blastia, (in contrast to the Kritya, who gave up their blastia after ascending to the sky) fought to keep their blastia. And so began the Great War.

The Events of the War
The war took place all across the world. The most noted place, though, was Mt. Temza. Mt. Temza used to be the world's largest mountain and the site of a Krityan city, as well as the home of Hermes and his only daughter, Judith. With the area being a war zone, Mt. Temza, as well as the Krityan town there, were reduced to a gaping crater in the mountain range.

Two notable humans who died there in the war were Damuron Atomais, a member of the Imperial Knights and a supporter of Commandant Alexei Dinoia, and Casey, a good friend of Damuron's. Seeing that Damuron could be of some use, he replaced his heart with a Hermes blastia an deemed the reborn Damuron, Schwann Oltorain, who would later make himself another name, Raven. Many entelexeia died in the war, most notably Elucifer, who fought alongside the humans, as his best friend, Duke, was a human, and he and Duke won the war. Unfortunately, the humans feared Elucifer's power, and killed him, sparking Duke's hatred for the humankind.

The entelexeia, having lost the war, were almost driven to extinction. The only known entelexeia still alive during the events of the game are Phaeroh, Belius, Gusios, Khroma, Krones, Ba'ul, and Astal. (Spiral Draco, the king of the entelexeia, was also shown in a PS3-exclusive side-quest.)

Ever since the war, there has always been hatred between the entelexeia and the humans, as well as the entelexeia's hatred towards blastia. (There hatred of blastia might also be from the fact that blastia are made from apatheia, the crystal-like mass of aer formed when an entelexeia dies.)