[ Sasuke bites his lip as he thinks, not having spent a lot of time having to explain the beliefs of his home. People just... knew and he wasn't a scholar or a priest, so why would he try and understand them? His family was fairly strict on their own belief system, though, and so he can at least give that. ]

There are a handful of religions, but the main one is ninshū. It's the root of ninjutsu and helped people to understand and connect to one another through our chakra flows. There are also some people who worship the god Jashin, but rather than focusing on the connections of humans to one another, Jashinkyō worships death and destruction. Mostly it's worshipped by terrorists who use it as an excuse to kill other people to free them from their fears of death. Other people worship the moon, but there are so many branches I don't think I could ever learn the names of all of them.