The Strongest Spiritual Enlightenment Person

The original name is "The Man Who Came to the Door by e`mo". Hell is empty, e`mo is in the world. As soon as the poor protagonist traveled through time, he encountered e`mo who came to collect debt from him. He had to find a way to pay off the debt, otherwise his soul would be taken to hell. Who can help him? Perhaps becoming the most powerful spiritual enlightenment talent in this world is the only way out...