I enjoyed the first half of the anime a lot because it revolved around both Ai's mysterious status as a gravekeeper (the main character) and the issues in society that have arisen as a result of the fact that people can no longer die.
However, the second half of the anime was not nearly as good as its first half. The story strayed away from its original premise (there was less about zombie people issues) and suffered from a bunch of plot holes. I personally didn't find the 'school' stuff to be interesting at all.
I would still recommend this anime though. The graphics are just wayy too gorgeous. Though the last half of the anime was kinda shitty, I would definitely stick around for a sequel too see if the series shapens up.
