I admit I found it a bit hard to create a coherent and straight story, mainly because the story doesn't really have one, it's just the premise; that's why I tought a card game, as gameplay, would fit. This way I think I don't really need a deep story but just well thought symbolism and a solid worldbuilding. I took Inscryption as an example, it doesn't have a really deep story but it is mainly about lore and worldbuilding, but this is masked by a good gameplay that keeps you engaged which is the card game.
But after all this I admit that I just got inspired about this idea and it was my first time playing around with this kind of idea about unseriousness and absurdity, so my inexperience got the best of me, but feedbacks always help to improve