Layton Mystery Detective Agency definitely was a fun anime throughout its whole run. The anime is basically an episodic mystery anime throughout its run, with occasionally focusing on the bigger mysteries. Katrielle's lovable personality was the main draw of the anime for me. Kana Hanazawa and Katrielle meld together to create a very entertaining anime. Her performance in the Layton anime is probably the most expressive I have ever heard out of all the anime characters she has played. It almost feels like Kana was given free reign, almost as if Kana was actively participating in the production of Layton anime alongside Level-5 to bring out the fullest extent of her blissfully good voice talents. Kana's defining voice for all of anime belongs to Katrielle in my opinion. Kana Hanazawa is Katrielle Layton.
There is also its unique aspect of making me as a viewer participate in the episodic mysteries. The show is carefully constructed in a way that makes me actively want to solve the mystery as the episode delves into its mystery more. There are a few episodic mysteries that felt jarringly illogical or poorly executed, but 80% of them were generally good. There is a frequent tendency to make me as a viewer cry when it comes to the resolutions, and that can be an issue sometimes. Some mysteries work well with the crying moments when the mystery/narrative are cohesively well-constructed, others are not so much.
As for my thoughts on the main story, it is pretty good. The main story is not so much a main focus, but I did not mind it personally because Katrielle Layton alone entertained me enough to keep watching each episode. The grand mystery felt more like an extra dessert, while the episodic mysteries were the main course. I was pretty surprised that the grand mystery was well-crafted and well-thought out. I think the story-based episodes could have slowed down the pacing so that I could be given time to form my own conclusions on the mysteries. It is not a big issue though.
As for other thoughts on the anime, I definitely wanted to see more of those kinds of episodes where it is focused on side-characters like Emiliana, Ernest, and the Inspector, the fun kind that extracts the wholesome, hilarious moments. The episodes that focused on Emiliana and Sherl singlehandedly made me like the characters on a whole new level. Surprisingly, more of the mysteries focus on the lesser side characters like the farm boy, the seven wealthy people, and the swirly hair genius. I think out of all minor character casts in the Layton series, they felt the most fleshed out. Some of the NPCs in Layton games, while they have charming designs, are pretty forgettable. I felt more closely connected to these "NPCs" (minor characters) and welcomed their reappearance when they returned for another episodic mystery. There is a good sense of world-building in that aspect that made me more invested. It makes me wish that the 3DS game had the complete story with these character explorations.
I am going to miss the anime series. I am dying for more Katrielle. I want the Layton anime to return so that Kana Hanazawa can voice her again. If another season of Layton comes, I hope the staff can improve in crafting episodic mysteries, while also integrating interesting character explorations for characters like Emiliana, Sherl and the Inspector. Katrielle and Ernest are pretty much fleshed out now as of this season, and now there is room to flesh out the other characters. Personally, I am more excited about the prospect of another season of Katrielle episodic mysteries than the idea of a Layton anime based on the six Layton games (A.K.A. what Ace Attorney is currently doing right now with its anime adaptation). Should the six game anime happen though, I hope Hino considers the idea of fleshing out Luke, Flora, Emmy, and Layton more than just doing a simple copy and paste. Give them some substantial character arcs.
