Look what I found while wiki walking on Tv Tropes: Magical Diary, a VN about a girl who suddenly finds that she is a witch and has choose wether or not she wants to go a magic school caled
Iris Academy.

They are several similarities to HP-verse, specially to fanfics: you got animal-themed houses where you are sorted by personality, a seemingly normal, Muggle girl who turns out to be a witch (here termed a Wildseed), who is sort of parody of Sues and who default (insert here name) is Mary Sue...

They are interesting differences though. The magical society in this much more authoritarian and the Secrecy Statute is enforced via Laser-guded Amnesia ( just read the non-spoiler entries on Wildseed families to see what I mean), magical classes are different (black magic for example is no more evil than any other color-coded magic and is closer to alchemy, and is of course taugh by a Draco in leather pants!Snape parody... )

It is also of course a Ren'ai (romance) VN, and an Otome (girl's love) at that. Since wizards and witches can be anywhere on the sexual spectrum on this 'verse, there are of course lots of paths and options.

overall, I think this would be a nice Hogwarts-like, but somewhat darker experience for both us HP fans and for any PCC-cer who might wanna try it since it is not really fandom specific. What do you guys think?