OH MAN I haven't read a lot but I'm gonna say The View From The Top by angst_division simply because it has SUCH great characterization and build up and it's a fic that's really stuck with me honestly

Otherwise I'd definitely say Best Laid Plans by username_error(Chromophilic_Daydream) is also stellar and has great characterization and build up with a lovely and cathartic ending, and First by Imeria is incredibly cute and I especially enjoy the second chapter that has Azul's perspective of him trying to present himself so specifically during his first year

Honestly I need to read more with them oops I'm just so bad at actually reading fanfics I still have a small heap from when I asked for recs LMAAO

ALSO HERE'S LINKS
https://archiveofourown.org/works/39932796
https://archiveofourown.org/works/41063748
https://archiveofourown.org/works/44006289/chapters/110646891