This is quite hard to say because I consider all my favorites stories as the best story ever. BUT, if I can pick one only. I would have to say; One of the Girls by @amberose - The comedy is so unmatched, so funny. Each episode is so good. It’s by far one of the best comedy stories on the app. The author is ridiculously funny and she’s a great writer.
Also, you should move this to episode fan community.