Seal of God: The prophet surrendered to the enemy, and the demons were all confused

[Cai Er starts with a childhood sweetheart style + human-demon hybrid + battle, cool! + daily life, cool! + not following a group, low priority for the main quest, transition to a demon hunting group, trader between the human and demon worlds]
Xingyuan traveled through the throne of God and discovered that he had a powerful golden finger that could predict the future and turn danger into safety.
He was born with powerful mental strength and magical talent, and he also had a good-looking appearance. He had no family ties and he was a childhood sweetheart of the original heroine. If this isn't a perfect script for the protagonist, what is?
What? You said I was a spy planted by the demons in the Alliance? Sorry, I betrayed you.