I have to say I started watching this anime worried about the possibility it would be only colors. But the story was really curious. Without going into spoilers, I want to say that the main character, Hitomi really evolves well from how she is at the beggining to how she changes her mind and how she is with her friends at the end.
How the anime play with the colors is also a noticeable thing. And of course, mention to the OST wich is really nice. I think, in some aspects, this anime can be similar to angel beats, just in my opinion.
Perhaps the only downside is that it could have been a bit longer to develop more the story and the arcs between characters.
