This is my first review and i'm not american, so sorry for the bad spelling.
Boku Dake Ga Inai Machi is a masterpiece, a unique anime, with beautiful animation, incredible story telling and A LOT OF PLOT TWISTS.
The story follows Satoru and his quest to save his friends and his mother, using his special ability, the revival, he can go back in time and change the future, his main objective is to stop a murder and discover his true identity, I can't say who is he, but I can tell that his identity is a little predictable, but the relationship betwen him and Satoru reminds a lot Batman and Joker.
I highly recommend everyone to watch this masterpiece, even if you usually watch shounen or other action animes, or even if you think this kind of anime is boring, this one will change you mind :)
