Erased

The basic premise of ERASED is not totally unique - Time Travel. There has been a lot of movies and shows based on this concept but ERASED stands apart for several reasons.

1) Pace:: The anime moves at a soothing pace. It's neither too fast nor too slow, but ideal and so, it never gets boring or too hard to follow.

2) Character Development:: There are a lot of anime in which even after watching 100-200 episodes, one would never feel empathetic with the characters. But in ERASED, even from episode 1, all the characters seem so real and you would really feel connected with at least one of them.

3) Narration:: This is one of the few anime which shows the lead character thinking out his strategy. Like Code Geass and Death Note, you will get a clear picture about the insights.

4) Animation Quality:: It has one of the best screenplays! There is also a lot of attention to details and colors are used very effectively to convey the message / emotions of the characters.

It is definitely worth a watch, especially given that it is a short series.