I'm a librarian who loves anime, manga, and reading a wide variety of genres.
How do you rate something that's obviously unfinished? And will never be finished? I mean, this series is beautiful, but it's also disjointed and doesn't have a proper ending. The last volume fills in a few details but brings up more questions than it answers.
Also, this story is like some kind of tragedy onion. With every layer you peel off, more tragedy.
I don't even have the words for what I'm feeling right now.