Dark in the sense that people died, background stories were dark and twisted, and one could not help but feel sad. It was greatly entertaining for me. I suggest that only teenagers and older watch this show... for it is not a lighthearted show for children, even if the art suggests that.
The audience for this show could be anyone who is a teenager or older, for it has many mature and interesting themes within it.
Only complaint: did not like the ending too much... I don't want to make a spoiler, but I thought there could have been a better way to end it... but it was a good ending overall. :) So not a really big complaint.
Also: before I rated the story I watched an anime review on youtube by arkada, so some of the numbers may be influenced by that. And if any of you guys want to watch a good review on many animes, including this one go to Youtube ad look up GLASS REFLECTIONS Anime Review (Arkada).
