This manga has one blaring issue. They introduce ideas without ever explaining the background. For example, they talk about something, and the characters seem to already know what it is, but they don't explain until much later what it is. I'm other words, it is hard to read because they don't introduce ideas before
Before using them. The plot, characters, and art seem good (so far), but this oversight has really had a negative impact.
Potential spoilers for an example: (very rough paraphrasing)
"I'm going to the blue garden"
"What?! Won't the king be upset?"
First, this is the first time something like that has been mentioned. Why did the character react like that? We don't find out until much later that it is a city