Was excited reading the title thinking this was going to be a city building story, but sadly it's not. The city building is not even 1% of the story, and it feels almost like an after thought. MC builds his harem of demon girls and then he sends them off to battle... There isn't even a good explanation as to why they are fighting. The battles are a convoluted mess with magical coins somehow solving every problem. All the characters are generic. Overall it's very silly, but there isn't actually any comedy in it. Maybe this could have worked if they went all out withthe craziness, but what we got is way too safe and boring.