I figured i'd give this a short review. Mainly because, I was very skeptical of checking this anime out because it has god awful reviews.
Goes to show, I really can't trust weeaboos to have real opinions.
Anyone who outright hates this anime, is a diehard WTC/Umineko fan. They expected a psychological thriller with some brutal gore. That really isn't what this anime was about, and thus...let the hate flow.
Story: It's average. I had it pinned pretty quickly. It does start out slow at first, but it picks up in the later half. I can't say I was ever BORED though, it kept me interested or else I would have just dropped it. If you take it for what it is, you'll probably like it.
EDIT: By the way, this is definitely half Slice-of-life. Not your thing? Don't bother. You'll be bored. Not the animes fault, just a preference conflict.
Music: I really enjoyed some of the soundtracks in this anime. A lot of anime loses emotion because of a lacking OST, but this anime doesn't suffer that problem. I could accept ANY insult towards this anime, except a shot at the OST. It was well done, that's a fact.
Art: This is another one that struck me when I read reviews. People knocking the art. That surprised the hell out of me. I don't know what trashy streaming site people watched this anime on, but the 720p BD episodes I have look pretty fantastic. The art is smooth, the effects aren't lacking, and there's a decent amount of detail. For the time of release, the art is very solid.
Characters: I don't have much to say on this one. Every character has a role, and they stick to it. Not a whole lot of "change" goes on, except for one character I suppose. For a short 11 (technically 12) episode anime, I don't expect much more. Characters don't need to go through immense change to be well done.
Overall: A decent watch. I don't feel I wasted my time watching through the anime.
If you take nothing else from this review, just go with this:
F*** the haters, if you think you'd be interested in this anime, watch it and judge for yourself. Don't let a bunch of bias idiots dumping on this anime deter you, you may just enjoy it.