If you have a Shinto temple nearby, it would be wise to contact them. If not, some on line research with some Shinto temples may be in order, but make sure you know Japanese for some of them!
Shinto literally means "way of the Jami", Shintos believe in Jami gods, which are extraordinary, ancient beings (an huge old tree or mountain can be an object of Jami worship, for example), but these deities can also be mysterious and evil.