This is my take on Eostia
This is a mixture of the visual anime and hentai and the wiki.
The land of Eostia and now it isn't what it is. What happened is simple the elves and Dark elves and other monsters.
However there is a village that is not apart of the war. They won't know what hit them.
What the village doesn't know is that there is a huge army of men and monsters about to make there way there. They are lead by a man named Volt as helead them to it.
How did this get this way.
Flashback
The queen of the Elves and Dark Elves are at war. For over centuries both sides wage war and both wage countless atrocities at each other. Both won't relent, both won't stop to talk and try to reason and so they continue to wage this crusade.
Many humans have died and between this war as humans where drawn into this conflict.
Th Dark Elf Queen Olga Discordia and she is the leader of dark elves. Her people are discriminated against them and habe suffered a lot and so with the help of monsters have waged war.
The battles are fierce and the opposing leader and leader of the Holy Knights look on and sigh as Celestine Lucross continued as well. This war is not over. The elves had team up and had Volt and created the block dogs to help them in the war.
Little did the know one day Volt betrayed them.
You see first there were just a bunch of unruly mercenaries, but grew and now there squad are going to comeback to the main force.
This how ...
The scout leader and the two underlings went ahead as they laugh and see a village that is out of the war. They don't know what happened or don't care for what is going on.