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It is primarily a setting which is based on animist themes and ideas, and thus, reflects this considerably with the way humans interact with the known world and the creatures within it. If there are religions, then it would be completely different towards any mainstream ones we know of currently. At the least, any Western-developed ones.
More than likely, any religion would be closer to Shinto, Taoist, or Buddhist beliefs, with multiple legendaries acting as "great spirits" or "kami" in place. This is also a setting with considerable soft sci-fi elements as well, so you have a weird mish-mash of polytheistic themes and utopian ideals.