Future Diary, Vol. 1 — Sakae Esuno

Yukiteru is a lonely student whose only hobby is the daily diary he keeps on his cell phone.  But Yukiteru has a secret that nobody knows about...his cellphone can tell the future!  Now a vicious game of survival is about to begin among twelve future diaryholders - with the winner crowned god of the new world!
Sakae Esuno's chilling shonen masterpiece is a relentless adventure that will have you questioning the boundaries of time and space - and hoping for the slightest glimmer of hope in a dark, desolate world that may look surprisingly familiar to all of us...