Six millennia ago, the borders between the material and the demon world were at war. The borders between the worlds were shattered, the cosmic vibrations of which isolated the two realms from all others. Separated from their gods and the elemental planes of magic, the creatures of the material world were forced to make war without access to all but the most mundane powers. During this span of time, many ancient races were annihilated by the demon scourge. Only the most powerful of warriors were able to destroy the demon invaders. These warriors would never be enough, however, as they could never match the full force of the greatest of the demon lords. That is until one day, when a Demon woke up to Justice, and turned on his kind.
Known as the Ra’a’shul of the Demon Legions, he aided the humans by drafting the demonic souls of fallen Demons into great weapons of destruction. The Ra’a’shul, wanting to bring true chaos to his own kind in the form of death, turned these awesome weapons over to pathetic demons to be used against the humans. When one of these demons would be felled, the blade would drink their power and add it to their own. When one of these demons was felled by a human, that weapon would put a great deal of power into mortal hands, power with which to fight the greater demons.
The human warriors empowered with the cannibalistic powers of the demon weapons, brought war upon the demon realm. Shattering the swarms of hell, they made their weapons unbearably bloodthirsty. The weapons themselves turned on the weak of will, now with a sentience created by the mixed souls of many powerful demons within, dominating and destroying the souls of the weaker warriors. The strong forced on, with bloodthirsty weapon in tow, and forced the darkness back until it was the demons that were being hunted, no longer the hunter.
It is then that another great power made its way to the war-torn realm of mortal and demon. This power, unlike any other magic before it, tore a portal into the world, and sent great fleets of flying vessels to make war with the demons and the men. This force, empowered by what was known as technology, and magic from within, annihilated the demons and the mortals alike. They ripped entire planets in half with their new, misunderstood, and grandiose power.
The demons, in an attempt to spare their greedy selfish existence from destruction, made use of a set of forbidden artifacts. They started an incantation that would have separated themselves from the world of mortals and the alien invaders. They sought to be separate, and so the greatest of them gathered these artifacts. Their attempt to flee, however, was not as they desired. The Tempest, the name given to the aliens, followed the demons into their new universe. The Demons separated themselves from the crushed mortal races, but brought their most fearsome enemy with them.
In years since, the human race has suffered at the hands of cruel rulers armed with the hated demon weapons of the ancient warriors. Some of these rulers were those ancient warriors themselves, immortalized and tainted by their conflict with the demon scourge. They made bloody war on each other, to let one demon weapon drink of another. To simply be used to draw blood, the weapons dominated their masters and made them insane. This madness would not be understood for countless centuries, until well after these last few demons would fade from history and knowledge.
Over the five millennia that have passed since the demons separated their world, most of this saga was forgotten, except in the relics of the ancients. The void between the dimensions was eventually repaired by the mightiest and most good gods, bringing the worship of divinity and magic back to the material world. The mortals, only a seldom few races of which still exist, have learned to bicker of petty differences and beliefs again. To have the happiness of ignorance as they once had. The cycle of time had come full circle, and things returned to their perpetual norm. This is all just history, however, the things that are happening right now are far more surprising...