Portals to other worlds quietly opened, and Blue Star became a battlefield where they waged war against one another. The native inhabitants were branded heretics to be exterminated, until a supreme god emerged and brought the chaos to an end. This story takes place after the chaos.
(This is my first time writing a book, and I'm taking it seriously. The first 30 chapters are pretty chaotic, so feel free to skip around if you're not enjoying them. It gradually gets better after that, at least in my opinion.)