Inspiration from France
I had the thought that, since the largest city in Karosu, Miare City is most likely based on Paris, the entire region of Karosu could be based on France. I started looking at the shape of France and I noticed it has a somewhat similar shape to Karosu. France has 5 major corners (arguably 6 if you want to count the southernmost corner) and Karosu is shaped like a 5 pointed star. The thing that is especially similar about the geography is the peninsula in the west. Both Karosu and France have a prominent peninsula in the west of the country/region. Anyone think these similarities are noteworthy? Here is a picture of France and Karosu side by side so you can see what I mean:
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