They were suddenly there. With no warnings from the sky, or predictions from ancient tribes. They just appeared out of thin air while you were drinking water or beside you while you slept soundly in class.Wearing ancient armor and weapons, they swept away humans as the scythe cut away the grass. The only hope was mystical red doors written "Safety portal" on top.Oz managed to reach one. Only to receive the news that earth no longer belonged to humans and if he hoped to live a similar life from before, he would have to become strong and rich.But he had a mediocre aptitude for magic and a low perception for cultivation.He was barely good enough to be the janitor of the sect."Nothing changed then," Oz smiled and grabbed the broom."I just have to keep on grinding."