a subject of more than one manga storyline (which has probably since become an anime), is the sleeping psychic underneath the diet building.
i believe this derives from shinto shrine maidens beliefs when the shrine maidens went out to fight oni (japanese demons, which are a bit different than the western idea of demons). some even enslaved oni in service to their family. the anime zenki is about this (and zenki used to be the name of one of my computers).
the sleeping woman underneath the diet building had a young appearance, but she was not young. she had been there an improbable amount of time and she secretly guided the fate of japan. she always had personal attendents and, iirc, they dedicated their lives to her for a certain period of time. there was no leaving for the attendants.
getting to the sleeping woman and asking her questions was a major plot point... especially since the diet often did not want to listen to her if her words were contrary to what they themselves always wanted to do.
i suppose this is a rather ancient idea... but it's interesting one... especially since it did not seem that she could ever leave the diet building. so, i wonder... how did she get there in the first place? did she appear from thin air at the base of japanese power?
shintoism is only possible to practice in japan and if you're japanese. not that i was really thinking about converting. hehe but, that's an interesting idea similar to druidism.... otherwise there seems to be quite a bit of difference between the two. especially since i'm pretty sure you have to be a man to be a druid.
oddly, i know less of druidism than shintoism. but then again, blame anime. (and the fact that druidism is a mystery religion.)