MEIMU: So! ... wait ... Is that a fenestrated wall? Like, from Homestuck?
SHANGHAI: Sort of. Your mom, the witch, and the old Shrine Maiden came up with this weird game for the new Shrine Maiden to play to test her, and it's got all kinds of weird BS references to MS Paint Adventures everywhere. They made these fenestrated walls so they could watch her, even though there's no way she'll actually see it or get the reference.
MEIMU: Heh. How'd you get your hands on this one?
MEIMU: Okay. So what's the game?
SHANGHAI: The goal is supposedly to find the "Precious Object," but apparently part of the game is finding out what the real goal is. It's all wrapped up in a bunch of weird puzzles and stuff, plus cryptic Kawadec hints from guides. There's a transportalizer in the witch's old cottage.
MEIMU: I bet I could beat that game, no problem!
SHANGHAI: Sure you could.
MEIMU: What's that supposed to mean!?
SHANGHAI: It was a sarcastic statement indicating that I think that no you can't.