Long ago before the modern era around 2000 years there was a big war between the gods, a god who wanted to destroy humanity named Aaron and the representative of the gods, namely the god of war named Horrus.
The war was won by the god Horrus by splitting his body using the Blade of Exile sword. But the gods were very anxious because perhaps the war was not over yet.
After several hundred years, it turned out that the gods were right and Aaron was reincarnated as a very cruel demon king in the human world. Because the gods could not intervene in the human world, Horrus was also reincarnated into the human world and led the humans to war.
In this magical world there are many races, such as elves, beasts or can also be called half-humans and humans, demons, and others.
The story revolves around a child. teenager with straight black hair, black eyes, slender body like a teenager in general, 12 years old. named Ace beyond, Ace, who is still 12 years old, trains with his parents.