Solo levelling: The God of Life

Long ago there was two mighty beings that could kill the creator of the sovereigns and monarchs in one hit. They were born out of nothing, they were opposites yet for one to function the other had to be alive. They were light and dark, life and death, Ying and Yang. They fought a never ending war but after many years they gave up and were very lonely. They found comfort in one and another soon becoming more then friends. But they knew something, it was only them. They wanted to create things living a dead alike, so they gave up their life to do that goal. Soon the first being was born, the manifestation of their will, The supreme being. He was weaker then them yet he had the power of life and death making it possible. The supreme being created everything they could of wanted and the supreme being knew his job was done. He created two beings out of their souls they would eventually become The shadow Monarch and The Monarch of light, each very loyal to their creator but now the creator went beyond his duties so he let his own subordinates kill him this setting his and their plans ago. The rulers and the Monarchs fought for a very long time, destroying their home land, they decided to find a new land, Earth. But the rulers did not want the Earth to be destroyed by his horrendous battle so they started to slowly inject mana into that world by using dimensional gaps that contained their prisoners of war. But the humans had a much simpler name, they called them gates... If you did not kill the monsters in the gates the monsters will come out and kill everyone around. But soon hero's came out who were blessed by the rulers, with their mighty powers they closed the gates but this just made more mana injected into the Earth. Soon even stronger monsters came yet even stronger hero's came as well. They called these people hunters, they could become S rank but they could also become national rank. This is the highest rank and if you have this rank it shows you are favoured by the rulers due to you receiving more power then the rest. It was very stable until the Monarch of shadows and the Monarch of light came looking for their successors. You see everyone remained oblivious to one thing that the supreme being did, he but the other half of the souls into humans and these humans go by the name of Sung Jin Woo and Jake white. He came from America but he wanted to go to uni in Korea. But after a while of him going to uni and tragedy hit his family. They all died thus leaving Jake no money due to his greedy uncle taking it all and then running away. He was now stuck in Korea with no where to go. He awakened as a hunter but only as the lowest rank, Rank F. He was now stuck working as a Porter with his friend Sung Jin Woo. And soon the fated day arrived the day they would gain their systems...