I'm afraid I don't know this place very well yet myself, but if this is to be trusted, Bishamonten has been looking after new gods and shinki.

[He pulls out a tightly folded brochure from the training session the previous day. It'd been in his pocket, luckily, and that makes it now the source of almost all of his information about this new place.

Or a clever prank... but the information all hangs together with his experience. He hands the brochure over for the boy's inspection. It's nice to know.]