Tbh, I like this manga but it could be better. For exemple, idk why he decided to allow that one girl to live and how and the art is strange at times.
In my opinion, if the author refined his art a little bit more when it comes to body proportions or faces, the manga sales should sky rocket. I'm not saying Centuria is bad (I give it a 8/10) but I'm saying that it could be better.
I'm in no position to criticize the manga due to my horrible art skills but, I felt the need to point out these faults (there are more) and see if others agree with me.