I will live positively!

From the protagonist: I don't remember anything about what kind of person I was in my previous life or how I died, but it seems I've been reincarnated into a different world. It's a sword and magic fantasy! www Whatever happens, my little brother is super cute! I'll defeat anyone who hurts Naia! And hopefully I'll get a romantic partner someday too. ←From the protagonist ...................................................................From the author: Ultimately becomes BL. A revised version of something posted on another site. The older brother of the protagonist from "Is it okay for a negative character like me to be alive?" written by the same author. This one came first and is more of the main story...? Be careful as both contain spoilers for each other. ←From the author (≧∇≦) ※※※※※※※※※Updates are slow (*´・ω・)※※※※※※※※※