The Demon King Hunting System

Before the universe exists, there was nothing but three supreme entities, wandering around in pitch black. The one supreme entity created the universe and the Other two entities created all the negative and positive energy in the universe. Without Positive and negative energy life was not possible. They Were named Supreme Entity of Creation, Preservation and destruction. When life was established in-universe the Many species went to war to capture each other's lands and to show supremacy. One day the gods' species found the source of all positive energy in the universe "The Pond Of Preservation", It granted gods limitless and unimaginable powers. After that, no species in the universe even had a chance to go against gods. They Were Called Absolute monarchs of all the living beings. Later on, the demon species who were against gods founded the absolute source of all negative energy in the universe "The Pond of Destruction". Buy Getting absolute limitless and dangerous power, they declared war against gods. Both Species fought blood-soaked battles. The War went billions of years Two billion years ago, the demon species spread their royalty and most powerful demons called demon kings across the universe. They attacked more than 60000 planets, including earth. but luckily gods were inspecting the planet at that time and easily slaughter the demon king. By establishing in more than 60000 planets, they were giving gods hard time. Gods then decided to summon countless peoples from different worlds to hunt the demon kings Now in the Current time, only 2000 demon kings are left, But they were strong. A boy name John vollen was summoned by the goddess and he was granted powers from the pond of preservation to hunt down demon kings. Unfortunately, the goddess teleported him into a strong demon world instead of a weak world. Will, he will survive? or death is written on his fate?