la douce agonie d'adam trailer grand blue
If the mystery is done well it can really lead to a great series, but that usually isn't very easy to pull off and more often that not it just falls flat. The worst mistake a mystery series can make in my eyes is when it raises so many questions but in the end fails to answer them, or maybe just leave it off at a cliffhanger like Rokka no Yuusha. Erased done well in that aspect, seeing as it didn't raise that many questions to begin with. See, what I think is the main problem in Erased's mystery department is the amount of suspects it brings up, or lack thereof. 4 episodes in I was pretty confident in my guess on who the killer was as it was so easy to trace back once you actually think about it. I would of been surprised if my guess was wrong to be totally honest, and that's not because I'm some sort of super-genius.
I seem to have a very obvious bias when it comes to works done by A-1 Pictures. I thought the art style resembled their previous works too strongly and therefore it derived from the series for me as it didn't strike me as dark enough in tone, especially for the kind of series Erased is. So, much like the opening and ending, the art and animation slowly grew on me the further it went on. It's very soothing and visually appealing. Combined with a decent musical direction and atmosphere it even felt cinematic at times.