It’s really the murders where the price needs to be cut in half. Those are the spirits Japan fears most.
There’s the ghost factor. “In some cultures the mood of the ghost might depend on the way he died,” Stevens explains. “A murdered person might be angry, wanting revenge; a suicide might be profoundly depressed and be dangerous for that reason.” Also, death could be seen as “polluting,” making the space “unclean.” That’s the basis for folklore and haunted places, Stevens says.