Middle school 2nd year, Amano Yukiteru, is a boy who has problem making friends. He thinks of himself as a bystander and will always write down everything he sees in a cell phone diary.
Tormented by solitude, Yukiteru began to imagine things like a friend called Deus Ex Machina who is apparently the Lord of Time & Space. Seeing Yukiteru's miserable state, Deus gives him a new ability. His diary will now record events that will happen in the near future. Yukiteru is then forced to participate in a game whose winner will become Deus' successor.
Future Diary was a very entertaining anime and manga series from a few years back but it was hardly Shakespeare. It wasn't until the author's new series, Big Order, was adapted into anime, did we appreciate all the things Future Diary did right. If only because Big Order does them all so wrong.