Lord of Nihility

I ask you, why do we exist in this universe? Why do the universe exist itself?
This is a story of a boy, Julius Grace. His rise from a mortal, to a being who looks down on the heaven.
He is a hero for the masses, but worse than a devil who harms his loved ones.
Are you confused about whether he is a hero or a villain? Well, he is neither. He is just a scholar who wishes to find the truth of the world.