Academt Of Five Peaks

Two hundred years ago demons from hell ravaged the world.They came for earth, killing and destroying the place humans had lived in, not stopping for anything or anyone.
The human race trained and created warriors who could fight the demons, but soon they realized that humans alone could not kill these things. To kill the monsters you had to be a part of them.
So the Hunters were created. Half human, half creature.

And even now today, long after the great war began, those Hunters still exist.