Ten years ago, the underground war between the slayers and the demons came into the light, revealing to the world the existence of both. Slayers, who are former human warriors, were given a choice to move on or to stay behind and defend humanity against demons along with keeping the peace between all supernatural factions. Demons were created by lucifer, when lucifer was expelled from heaven. A huge war was waged above ground in full view of human kind. It appeared that the demons were winning. Five slayers had fought against the demons and it was obvious they were losing the fight. Then there was a moment of stillness. A young boy holding a staff, who couldn't have been older than 15, stepped forward. He walked right up to the largest demon and said something no one could hear. A portal opened up from the ground and took all the demons into it along with the boy. From that point on, the world knew the truth. Demons existed, slayers existed, and everything else....existed. The world would never be the same.