To begin, I, luckily, didn't discover that this was a Ryukishi07 work until about halfway through. I do believe that many only dislike this anime because it came from Ryukishi07, as it is very different from other works. I personally liked it alright. Story: It took a long time to figure out what exactly was going on, and once it tells you, it rushes through everything. Simply put, this should have been a longer anime. There just didn't seem to be enough room to fit what was necessary to make it good. The story certainly gave good mystery, yet, at the same time, skated over some thingsand just threw others into your face so fast it was just stupid. Literally, everything comes out because two characters are trapped together for a few hours. That's the only reason.

Art:
I loved the art. I thought it was beautiful. It actually somewhat reminded me of Jigoku Shoujo; or Hell Girl. I don't have much to say other than it's the shiny, newer art style of modern times. And it was great.

Sound:
I was quite fond of the opening and ending of this series. They were really pretty and just had a great feel to them. Again, was slightly reminded of Jigoku Shoujo by the opening. Not entirely sure why, but, I had to look up the other opening after starting Ookamikakushi.

Character:
Pretty much all the characters only had one dimension. Probably due to the fact that they only lasted a few episodes, or if they lasted longer, they were minor characters. Even the main characters were pretty one-dimensional beings. They changed a bit, but overall, nothing changed. Only two characters changed a decent amount, and they weren't even main main characters! The antagonist was very badly written as well. Just...just really bad.

Enjoyment:
For all the flaws, it was pretty good. Rushed? Sure. Bad character development? Pretty normal for twelve episode shows.

Whatever you do, don't go in expecting something like Higurashi or Umineko, because this is not like that. At all.