There's a board game called "Arkham Horror." I think some people have either played it or are familiar with its sources of inspiration. The action takes place in a city where players must prevent portals from opening (or close them) and prevent an ancient god from awakening. There's also a system of horror tokens that gradually accumulate, and some shops simply close down, while in others, the owners turn into maniacs. I have similar associations with Margel. I would say that the real fun will begin when Nysho gets her hands on Purian, but judging by her behavior, she was already influenced by some Kirishimka several years ago.
The Horror of Endless Expansions (expansions for the board game)*