It does follow monsters and the leaders are a bit crazy like Overlord, but this has a less dark feel than Overlord and isn't just about domination... so far at least.
I really got confused when I recognized the art style and didn't know why, but then I looked at the artist and realized that I've read a manga with the same artist.
I'm not a metacritic but it feels like this is going to drop to a five star rating soon, not my opinion, but it is others. Well, not like the rating systems matter when most people work on a binary scale and its only a 1 or 10 for people.