Ryuu to Yuusha to Haitatsunin

warning: the first chapter is a very bad look on what the manga really is. It makes it look like a pretty generic comedy fantasy when the main objective is expanding a bureaucratic fantasy world that follows obscure medieval rules.

The characters are in general lovely, with a very liberal art style that focuses more on impact than consistency. Everyone has a particular look that sells what their deal is but can be extremely simplified, so you can pay attention to the intricate cities and settings. Most jokes are about regular folk having their jobs structured around magic, levels, heroic deeds (performed by appointed heroes) and the like.

There are quite a few D&D references (for example explaining that nothing would be so hard if there were bags of holding) but the main inspiration is MMORPGS and an in depth study of medieval economies that gets expanded in an extra page at the end. I personally love that expansion detailing the research, I learned quite a bit about how hunting was banned in most of Europe even to protect your crops because the lords wanted to hunt in their woods, how wailing was done before refrigeration, and tidbits like that.

I guess that you have to already like work comedies to enjoy this twist on the genre, but I'd recommend this to any fantasy fan. I'm for sure stealing some concepts for a D&D campaign.