Genshin Impact will most likely not be hosting any other in-game collab so soon after the disastrous situation with Horizon Zero Dawn, so don’t be expecting characters from other franchises to make their way into the game. Faruzan may be the closest thing we get to see Hatsune Miku in the game, though.
The Enigmatic Machinist from Sumeru can be defined as a calm, knowledgeable person that imposes herself as a senior whenever she’s in the room, demanding to be called “madam”. Maybe that’s why Cyno says that she’s just like a “kindly and chatty parent”. But who is Faruzan, actually?
