Angel Beats! (2010)7.6 /10

Storyline:  Yuzuru Otonashi awakens in a strange school with no memory, only to learn he's dead. Recruited by a student-led rebel group opposing the mysterious Angel, he joins their fight in a limbo for those who died with regrets. But as his memories return, Otonashi begins to question the truth behind their battle and what peace really means.