The best I can do to describe this story is to call it a charming little adventure. The author has created a wonderful world that has its own rules and customs, but has been obviously shaped by centuries of visitors from another world.
If I were to suggest ways to improve, it would be in flow. In this story, many things are introduced, but than dropped and not explored further. Midori’s pregnancy being the biggest of them. It becomes a matter of fact, but the story would be exactly the same if she wasn’t. I know that more volumes are planned, and i hope that these questions are answered then.
Overall this story was nice. I do not regret reading it.