This is kinda weird. First off, it seems to be indefinitely on hiatus, as of chapter 14, so take that with a grain of salt. As for the story, the PoVs are all over the place. The 'Main Character' is the aforementioned healer/demon lord, and there's a bunch of interesting stuff. Like politics made it so that healers aren't allowed to buff themselves and so on. And it looks like it'll be a revenge story, where the MC has just taken over the Demon Lord position and .... well I'm not sure where he's planning on taking that, nor why he did it in the first place. His goal is to find 3 former party members who abused him, raped his childhood friend, then killed her. Not sure why he needed to become the Demon Lord to do that. He certainly could've done it on his own.
But so yeah...
then as he ritually sacrifices the rapists to bring her back... he finds out she's still alive? like what? She was literally dragged into a building, and then he hung around the next morning until they left after claiming they killed her, and yet he never went INTO the building to check? Didn't bury her? It's utterly nonsensical.
But then the story promptly ignores all that, and focuses on the actually really diverse and well-written side cast! We see all 3 of his main henchmen, who seem to be super well developed, and loyal and very humanlike (compared to the old Demon Lord who was very much a demon). I mean we've got one succubus (vampire?) type, one guy who looks pure human, but is apparently a mild-mannered soft-hearted demon summoner, and then we have a battle junkie with honor. So we see a bunch of these people's personalities, and hints that humans are corrupt to begin with (attacking elf villages and enslaving the women, a guy who might be the king is clearly evil and ordering this, and the 'hero' who has retired is clearly being made into a minion just to do their dirty business)...
...and then the story goes on hiatus! Congrats, you read a mess of an intro, but with some definite potential, that goes nowhere!
Damn i wish this continued, just so i could skip ahead. But frankly, I can see why it got the ax.