Sword Art Online: Save the World in the Name of the God Envoy

In the dark world of the under world, there is a story: a young man who traveled around and was proficient in ancient magic restored the barren dark world and led all the dark world residents to usher in a new peace. Together with the two-sword swordsmen from the real world, he defeated the dark forces that hindered the development of the under world. His name is - "The Envoy of Miracles" Finian [Sword Art Online fan fiction. Pursuing the orthodox Western fantasy flavor, it is 70% original. The male protagonist is a divine messenger, philanthropic and powerful in action. There is no NTR or party disputes. Parallel world and ending. ]