Fandom: Harry Potter -------------------------------------------------- AU First Year onward: Harry's relatives were shocked when the Hogwarts letters came. Not because Harry got into Hogwarts. They had expected that. But Dudley, on the other hand...That had been a surprise.
archiveofourown.org/series/15025 4★ for First Year through Third Year, which have more humor-emphasis and are largely fixit; 3★ for downbeat-ending Fourth Year 😢 and shocking-ending Fifth Year 😭, and unfortunately only two chapters of Sixth Year were written before it was abandoned. 😭😭😭 The author hasn't posted on AO3 since 2016 except for one unrelated "found at the bottom of my fic folder" short in 2017. (I hope they're well.) It's really hard to know how to shelve, much less rate, "Magical Relations" when the whole happy-ending-less, 258.3K-words, series (1=36.4K; 2=28.4K; 3=47.8K; 4=46K; 5=91.3K!; [6=just 8.5K posted]) is listed as one work this way. (Is that how it was posted on FFN??) It has 71 total chapters, btw, if you want context for how far the other reviewers read.
Spoiler level Yellow (since I already said "fixit"): Spoiler level RED:
These are well-written AUs, with great lines and clever twists on canon elements throughout, some of which pay off for good or ill much later. E.g., no Hagrid introduction to Diagon Alley = Harry starts Hogwarts with no idea that he has money or that he's famous as the baby who defeated a dark lord, but he's reluctant to show any vulnerability like admitting his ignorant confusion at all the stares.
Magical Relations offers rich, on-key characterization for a variety of wixen characters (Harry is sorted into Slytherin — Snape is an only-somewhat-scary respected mentor — but he persists in having a variety of non-Slytherin friends as well, including Hermione, before too long Dudley, eventually Luna, etc.), and makes the interesting choice of having Vernon warily more able to accept magic than Petunia, if his son has the opportunity to succeed at Britain's best school of it.
In terms of pairings, that's a lesser thread, so don't avoid the 'verse just because you don't think you'd be into eventual early stages of tongue-tied-Harry/Padma, or on/off Blaise/Pansy (the details of which Harry's PoV is largely oblivious to).
I binge-read the series, but now kind of wish I'd stopped at #3, despite how much good stuff I would have missed, because my aching heart will likely never get any leavening victory/ resolution. The "angst" tag on #5 (right next to the "humor" tag!) was in no way enough to prepare me — that could've just referred to Harry's anger with the offensive things that a deeply-conflicted Draco sometimes says.