In the dawn of time, non could lay their hand on those revered as gods. The dragons lived with their heads raised high above all others. Humans, demons, and undead could do nothing but pray to these entities from higher up, until that fateful day. When the mortals obtained the light that made the dragons gods.
From the first flames in the hands of humans came metal, from metal came swords, axes, bows, and spears.
The demons found that they could control the fire with their very souls. This was the first time that mortals used magic.
And in time, some of the undead could feel once more.
Suddenly the dragons lost their immortality in the beholders eye. the human king Gilgamesh, the archmage fo the demons Pandora, and the lord of the undead hades saw their chance to rule the world and for the very first time, humans, demons, and undead fought on the same side of a war.
Lost in pride, the dragons did not join forces despite being greatly outnumbered. One by one the dragons lost their numbers, not even the children were spared. Then Bahamut, the most powerful dragon swallowed his pride and made a small army of dragons to attack hades and used the power of one he once looked down upon.
All dragons in this army were sacrifeced to cast this spell. After this event there were about 150 more dragons left, but the spell only activated when every last dragon was gone. Gilgamesh died of bloodloss after the battle against the final dragon Tiamat which is when everyone found out what Bahamut's goal was. From Tiamat's blood her soul was released and entered Gilgamesh's body. His skin turned as gray as ash, his eyes were glowing yellow, and from his spilled blood formed a sword with saw teeth on it's blade. He didn't know who he was, all he knew was that he was a god.
The 150 last souls all eventualy entered body's on the verge of death, all the being that were created had no memories until they lost whatever they had left from their time as a mortal. people managed to kill some of them, but every time they would just be reborn into a new mortal on deaths door. They were called the blood wight.
For decades it was believed that nothing could take the souls of the blood wight until a group of them turned on each other. and the souls of those who died there got destroyed. Only the weapons that formed with the blood wight could take their souls. These weapons were named the soul reaper weapons. And the hope for the end of the dragons appeared once more.