Just finished the series roughly a month ago... It was much better than I'd thought. This anime'd been popping up in my recommendations for years now. I paid little attention to it after finishing Hyouka and immediately looked for something similar. To be short, if you like Hyouka, there's a high chance you'll like Gosick:
- the STORY takes on surprisingly serious and dare I say disturbing subjects yet strangely enticing. Each mystery's presented and resolved in about 2-3 eps and they're all kind of connected which definitely helps the world-building become more like a "real" place.
- I didn't enjoy the PACING of the 2nd half, sometimes too hasty and sometimes scenes drag on forever.
- Overall, the MESSAGE of friendship is endearing, I did enjoy the chemistry between the 2 main CHARACTERS and their growth journeys, despite some of the tropes. Most of the remaining chars are kind of a snooze-fest.
- forgettable MUSIC
- decent yet not too impressive ART. I did like the garden scenes very much though.
Hope the review helps!