Mirai Nikki
Yukiteru Amano is a 14-year-old, shy and daydreaming loner who observes life and jots down the events on his cell phone. His only friends are Deus Ex Machina, the God of Space and Time, and his assistant Muru Muru. Deus transforms Yukiteru's phone into a Future Diary, capable of predicting the future up to ninety days. Yukiteru discovers he and eleven others are part of a battle royale survival game orchestrated by Deus. The aim of this game is to eliminate the other diary holders, the winner to succeed Deus as god and prevent the Apocalypse. Yukiteru finds himself protected by Yuno Gasai, a charming but psychopathic classmate who obsessively stalks him after they had promised to go stargazing together a year before. (Source: Wikipedia)
Mangas
96 chapters in this series