Ok you asked for favorite singular but I can't pick so I'm just gonna list off a bunch lol

I'm going to answer writing first because it's a shorter list haha. As you can probably tell by the fact that I have tagged I think almost every fic I've written with "pining" I love writing pining....I also really enjoy ensemble antics + writing humor...also texting (kinda want to write an epistolary au one day...) I don't know if those "count" as tropes but they are elements i enjoy incorporating in my work!

In terms of reading (unfurls scroll) I love what I'll call "specific industry aus" where the story is set in a specific industry and there's a good amount of detail about that industry! Whether that be idk politics or acting or sports etc. I guess really I love strong worldbuilding in general, because I'm also a sucker for a sci fi or fantasy au as well.

I also really enjoy mysteries/casefic altho that is rare in this specific fandom and honestly kind of rare even in fandoms more suited to it (ie ace attorney). POV outsider is something I also really enjoy especially if combined with incorporation of social media into a fic.....and in terms of romantic tropes I think my absolute favorite is what I've heard called "A fell first B fell harder" which to me is basically, character A has been aware of their feelings the whole time and has resigned themselves to quietly pining forever while character B is also in love but doesn't know it until they have a big dramatic realization and proceeds to act on said realization immediately. As you can imagine I also really enjoy friends to lovers!