To be honest, it was a pretty underwhelming finale. There was no real conclusion to either Holmes' rivalry with Enshou or his romance with Aoi. Even the final case felt lackluster and didn't have the impact you'd expect from a season finale. I know the source material is still ongoing, but even with that in mind, I can only judge what the anime delivered. It clearly doesn't feel like it was made with a continuation in mind. The animation also kept getting worse as the series went on. Overall, it's not a bad anime, just a rather boring one. Most of the cases are fairly mundane. That's not necessarily a flaw, but I personally prefer grander or more intense mysteries like in episode 11. At least Aoi is adorable, and the romance was enjoyable enough to keep me watching.