

Tokyo Bay has the Bōsō Peninsula in the right place in relation to the rivers, but only has one natural island. Osaka Bay is most famous for hosting an airport (on an artificial island), but the screenshot shows a peninsula, so that doesn't match.

But these maps are supposed to be flat and Japan famously has very little flat land, which suggests either Kansai or Kantō. *Hanami Bay* is temperate and sounds very Japanese. Singapore is created by such a channel, and has a famous airport, but it isn't best known for its beaches (though it has some nice ones!), especially on the northwest coast. The distinctive feature of the screenshot is the channel that runs from sea to sea creating the island in the right. But that covers a huge portion of the world. *Asanu Beach* is tropical and the name sounds vaguely Malayo-Polynesian. C:S maps are usually 'inspired' by real places, aren't they? Any guesses as to where these places are?
