User blog comment:B214/Volume 23 discussion blog/@comment-201.19.100.21-20170410202129/@comment-10330822-20170410232230

I've seen MC's that have been as good as Issei, but I don't think I've seen a series with this good of world-building.

That's kind of the thing, there are some series that have really great world-building but crappy MC's, while some series have really great MC's, but really crappy world-building.

DxD has been one of the few series that does both really well. Everyone and everything is rather interesting, not just the MC.