Harry gets sent to a Parallel Universe with where he is in Slytherin, need help finding it.

I read it maybe a couple months ago, but its details aren't in my notes so I can't find it again.

what I remember is this: Out of guilt, Dumbledore sends Harry to another universe for essentially ruining his life. In the new universe Harry wakes up in Slytherin, I think its year 6 or 7, and he isn't friends at all with Hermione, Ron, or the other Gryffindors. . So Harry tries to speak with Hermione, and she panics thinking he's trying to attack her, Neville and Ron show up with the marauders map. I know its Harmony endgame and not too long but I can't find it.

Does anybody remember this fic? Thank you in advance.