I can say that the idea has also crossed my mind long before Heavensward, and all signs thusfar do point to Shinto animism as the sort of driving belief system of Doma. However, there really isn't any concrete detail yet.
But! The most important part is, of course, to have fun with it. You already have pieces to the puzzle, what harm can come about if you fill in the gaps?
But! The most important part is, of course, to have fun with it. You already have pieces to the puzzle, what harm can come about if you fill in the gaps?