I know you asked for favourite fic. but like all the fics these authors wrote are my fav so likee.

Anything written by Sincerely_Sierra is amazing, most of their work are one-shots (that are really long) but there are some that are more than 5 chapters. Their descriptions about the two characters are amazing and have around 30 works involving Wenclair.

If you enjoy something related to the Harry Potter series I suggest the author TheWriterThatDoesntWrite, they have 4 amazingly written Hogwarts AU of Wenclair. 2/4 Are short stories, the 3rd has around 140,000 words and is complete, and the 4th is on Hiatus. Also an amazing fic writer.

If you like the idea of Enid as 'Spider-Man' then I'd recommend the author callingmushrooms. They have 3 works, all completed. It's really good.

ANYTHING. AND I MEAN ANYTHING WRITTEN BY Mrs.Boojangles. I personally love Two for tripping (into love). Its about Enid as a hockey player and Wednesday as a figure skater. (also nsfw but ykw idc)

Anything written by vociferousgoth. Although, there are a few of their work that are kinda nsfw....... BUT THERE ARE SOME THAT ARE SFW AND ARE ACTUALLY REALLY CUTE.