[Ginia knows from Archer the cultists in the forest were serving some god, all in the name of bringing around a new order. The only reason she doesn't mention it to Shun is because she knows Archer plans on paying Shun a visit himself. Why waste Shun's time with second-hand information when they can discuss other things?]

Let's not discount Obon, but this and the department store definitely have the strongest connection through the tags. Do you recognize the language? Some of them look logograms of some sort, but most if it seems like a mess.