In a world filled with mystical beasts, demons, demon Slayers, Mages, and Dukes who harness this power. The world has been in chaos for over centuries now, demons fighting to overthrow the humans, Mages fighting to protect their realms and each of them on the verge of ending the other, till a new order was formed, a set of high class mages rose to end the battle between themselves, so they combined all the powers of the demons, mages, magical beasts and creatures, and combined it together with theirs and thus they became stronger than any person. So they called themselves Elders, cause of their immense power no one dare to stop them.
So the elders managed to stop the war and they created 12 Dukes to be able to share their power with the Dukes each duke represented an elder in physical form.
Everything was okay until an entity emerged which was called the Order. They came just to overthrow the Elders and gain more power. "Now the war has begun again this time it will be the destruction of humanity. How will we save them, the humans". The fight for power has begun the Dukes must find a way to protect the human realm at all cost.