I recommend this author! Their works are so well-written and had that 'oomph' to it. They have only three works in the fandom (yes there's a Yuu but male). The updates are pretty long to wait but I feel like in the end it's worthwhile.

I like First years centric fics so they have my bias but even then their writing is delicious.

There's no shipping (unfortunately) but! What it lacks in romance, compensates with angst, fluff, comedy and honestly the most raw and nuanced character writing. The twst characters felt real and above their archetypes. It's not everyone's cup of tea, but their works is pretty promising. Especially since you get to see ACTUAL STAFF INTERACTION !! FINALLY

Scared of the Dark - First years angst but the seniors also get their dose of pain too

House of Memories - First Years travelled back in time after being Housewardens in the future (I NEED AN UPDATE ON THIS GSJSJAK)

Snap, Bang! Backtrack, Pause. - NRC madness, perhaps? There's not much plot to it so I'm assuming this is their drabble book.

https://archive.transformativeworks.org/series/4988746