I saw this anime in two days-two nights, actually-and it was really awesome. It had twists and the ending was...I'm not going to spoil you! Watch and find out!
The plot was great, the music was awesome, the characters were really well-made...It's so good I may replace "Angel Beats!" with this one in #3 of my favorite anime. I may. Or may not. I don't know yet.
I tottal recommend it to all of you. I give it a 5.4/6 because reasons. I have nothing more to say without containing spoilers, so I'm making another version of this review sometime in the future. (I don't promise anything.)