Story: Maybe it's only because I've read this manga once but the story confused me. In the beginning it was a nice kind of confuse that drew me in, but as the story progressed loose ends were messily tied together. The story certainly wasn't cliche, though it wasn't good either
Art: I really love this artist's art. It looks so beautiful and natural - that's probably what kept me reading.
Character: Again, maybe it's only because I read this once, but some of the characters really just blended together; I couldn't tell who was who.
Enjoyment: I really liked the art, and there are some scenes that
are just beautiful, especially coupled with what the characters are saying. But in the end, the big picture was just too blurred for me to say I enjoyed it more than any other manga I've read.
Overall: If you like her art, read it. If you've got a clear mind, read it. Honestly, I think you should stay away from this manga if you're not a fan of her art or tragedy. But otherwise, go for it.