Heaven's Last System: Welcome To The Apocalypse

In the Year 2044, When Humanity had long since progressed, When AI became the news of the day, When Money lost it's value and everyone lived their lives in peace... A terrible misfortune struck the Earth.
The sun turned black, It's rays of darkness pouring down on the world below, The Apocalypse had began.
Humans were at the bottom of the Foodchain but it seemed the Black sun granted them power, Transforming their souls into a different entity entirely.
Humans were able to control fire, water, air, earth and they were easily able to stand up to any Zombie threat but the Apocalypse brought more, Slowly but surely, more beings came into existence, Ghouls, Vampires...
To survive was a problem as the resources were scarce, but that wasn't the problem, It was the fact that the Apocalypse had brought downfall upon the world.
A single man, Blaze Jin, A 20 year old College transfer student got a chest sometime later, A cheat to help him survive the world and this Cheat was called Heaven's Last System...