The third leigion might be confucianism, but because kanako is like the representative for shinto religion, i dont think it will appears, the next touhou game is probably like where will the most faith of people of gensokyo will go to..buddhist, shinto(Kanako), or taoism?That is why the next touhou is about war of religion, and i told you most people from the ancient is pretty evangelistic, just like how the real world currently in, here people will talk about christianity,muslim and jews...three religion that currently still at war, so touhou is like the counterpart for it, buddhist shinto and taoism, but because magic happens there, it will surely turn into a full-scale war, im sure it will be,