The moment the Hellhound appeared, the entire territory started trembling. The symphony of predestination was at its limit, and it could no longer take it, especially faced with the 'scepter killer' created by the School of Summoning.
Amongst the various beastly natures that created the Hellhound, the strongest were the three heads that controlled the hound. And amongst them, the most important was the demon wolf that could swallow the sun in legends.
In order to fuse the beastly nature and human body completely, the school had wagered the phantom beast saved within the aether world and drew its essence into the inheritance of the beastly nature.