I just finished vol. 3 only. At first, I was nervous becasue the story was too dark and too mess up. However, to think deeply into it, i made a lot of sense.
Incest - Setsuna's love for Sara at first gave me a chill. When I think about it, it made a lot of sense becuase the reincarnations of Lady Alexiel must suffered.
After the final, I will continue to read more. So far, I think AS is one of the most realistice manga so far. It's very dark and yet very real. I'm glad I'm reading AS at this age, if I read it when I was younger, I don't think I will have a full understanding, nor I would understood it.
The story didn't chose either side "good nor evil.." it stood between the line of good and evil.