Western Fantasy: Despicable Demon God

[Alien continent + time travel + growth of evil ways] Fu Sheng, a down-and-out demon from the bottom of the demon clan in Tianyuan Continent, once traveled through time and fell into the world of swords and magic. The elves regarded him as filthy, the paladins swore to purify him, and the wizards wanted to nail him to the dissecting table. They didn't know that what this "demon clan" brought was a set of evolutionary laws that could devour the gods...