This world has been making itself somewhat inconvenient to investigate. It's the only solar system in its universe, and the design is pretty blatantly god-created. The sun is made out of glowing filigree and gossamer fabric, the stars are a complex swirl of carefully arranged light, there's multiple moons and one of them is a giant paper lantern... It's incredibly pretty, though, and the planet at the center of the system is just as carefully and beautifully arranged as the sun and moons and stars.
There are, also, almost no mortal settlements on the surface - a few tiny monasteries, somewhat more clusters of what are effectively landing pads for beautiful flying craft and outlets for large portals to dimensional pockets.
The mortal population isn't exactly small - instead, every messy corner of humanity is neatly folded away like a pile of clothes shoved in a drawer, except instead of drawers or closets, settlements are tucked into enormous dimensional bubbles. The bubbles are extremely magical, and so is a lot in them - though not everything, or even perhaps most things. The people don't seem to be reductionist, and many of them have magical bodies (this seems to skew very, very heavily towards the adult population; magical children seem vanishingly rare).
The world isn't at war right now, and the news doesn't mention anything the locals consider large ongoing atrocities. They call their gods the Arts, and large sections of news reports on the interactions with the Churches and their associated Arts or on interactions between the Arts. There don't seem to be any imminent dangers from those (though the way Allspeak translates the name and epithets of the most frequently mentioned god, the Art of Suffering, might be a little unnerving to some people).
Some of the bubble settlements are clearly more culturally, politically, or religiously influential than others, and some do seem to be part of larger polities or alliances. One of the more religiously important cities looks to be Thousand Tigers, the capital of the Liberty River Valley Alliance. The Liberty River Valley has an unusually dense cluster of bubbles along one heartbreakingly beautiful valley, the mountains terraced to support the numerous landing pads, the aircraft tailored to visually complement the numerous colorful birds that flit among the trees and waterfalls.
Thousand Tigers is also one of the prettier bubble cities - among its numerous churches are several dedicated to the Art of Architecture, and they have a lot of magically supported buildings. It's not particularly large population-wise nor particularly over-crowded - the bubble cities need to be able to support themselves with zero imports if needed, and this one seems particularly attentive to that - but it's still got about two hundred thousand people buzzing about their days. There's also a pretty clear city center, luckily, with a large public square overseen by grand buildings.