Rise of the Advent of Cataclysm.

Abruptly, life as we know it comes to an end when phenomena called the \"Gates of Hél\" suddenly open in every city across the globe, pouring out hundreds of millions of rampaging demonic creatures set to annihilate all of humanity on orders from their King; The Red One.
Caught in the beginning of the end is Kai Mora, an estranged young man forced to participate after he is unluckily chosen through obscure qualification as a vessel of The Red One and granted power by mysterious entities.
Now a prospective vessel, he is ironically hunted by Hél itself, the only option left is to fight his way to the top; to become so powerful that not even the devil would challenge him.