Future Diary (未来日記, Mirai Nikki?) is a Japanese manga series written and illustrated by Japanese manga author Sakae Esuno. The manga was first serialized in the Japanese shōnen manga magazine Shōnen Ace on January 26, 2006, and is published by Kadokawa Shoten. As of April 26, 2011, eleven tankōbon volumes have been released in Japan. The manga has been licensed by Tokyopop, and ten of the English volumes have been released, with a release for the last two now uncertain due to Tokyopop ceasing publishing in North America. A "pilot anime" DVD was released with the 11th manga volume in December 2010. A TV anime series animated by Asread began airing in Japan on October 10, 2011. Funimation has licensed the anime for distribution in North America.
Esuno has also authored two side-story manga, each one spanning five chapters: first Future Diary: Mosaic which focuses on another Diary Holder and tells unrevealed plot points of the main story; and in 2009-2010, Future Diary: Paradox (published in Young Ace), which tells the exploits of Aru Akise and Murumuru set in an alternate timeline.
Yukiteru Amano, a highschool student, is chosen to participate in the Diary Games. Twelve contestants are participating, and the last one remaining becomes the God of Space and Time. With the assistance of their "future diaries", a device that can predict the future, they must fight before Deus Ex Machina -- the current God of Space and Time -- dies and the world is destroyed!