I'm going to have to agree with the majority of viewers; this is a great anime with a unique story...though it might not be for everyone.
I noticed that one of the reviewers had the most inane childish review, mentioning nothing about the actual anime and just saying it was "crap". Really? In fact, that reviewer said it was "just a typical anime filled with nudity---no male nudity either!---and filed with satanic themes". There is absolutely no nudity whatsoever--save for a 'nipple' (in silhouette only) in the first opening and one single episode near the end (which has no private areas displayed)--and I have no idea why that reviewer believed it was about satanism.
I'm sure it was a useless trolling attempt on their part, but some people might actually believe that garbage the reviewer said if they weren't sure themselves.
As for the show itself, the animation was well-done; the music was unique (especially the first ending theme and Kurosawa's theme), rife with deep mini-plots, light humor, dark humor, and genuinely likable (and hateable) characters.
I do agree that maybe at one specific point I felt I might be losing interest, but I honestly don't believe that was the anime's fault. And sure enough, something occurred within the story immediately after that definitely fixed that.
As a show with little focus on sexuality , and instead on the deep and painful cycles of life, death, relationship and happiness...I know many will enjoy it.