There was a genius who's been born. He lived from his village with hid parents peacefully. There, he trained himself and learned magic and swords. One day, an event he couldn't take has come. He promised to himself to make the people responsible for that to pay with their lives. He then travels a dark path to take revenge.
When he is about to complete his vengeance, he learned the truth and couldn't handle it anymore. He asked the Gods for help, and the Gods answered his call. But the Gods gave him a condition as well as the price for the sins that he made.
Also, please try to read my first book "Domination of the Greatest Sovereign".