shinto

Purification in Shinto lifts the burden from the shoulders of the individual and washes it away.

Not specifically. "Demons have been on Earth as long as we have. They're all over the world, in their different forms _ Greek daemons, Persian daevas, Hindu asuras, Japanese oni. Most belief systems have some method of incorporating both their existence and the fight against them. Shadowhunters cleave to no single religion, and in turn all religions assist us in our battle. I could as easily have gone for help to a Jewish synagogue or a Shinto temple, or _ Ah. Here it is.