Well, to be a bit more specific:
The premise:Arata naru Sekai (The New World) is a new multimedia franchise headed by a collaboration between Ascii Art Media Works, Aniplex, Kadokawa Shoten, and Madhouse. The franchise consists of one whole story written by Hitoma Iruma, which will be split into the past, the present, and the future, each to be told as a novel, manga, and anime respectively. This project was started in celebration of Iruma's 5th year as an author.
The human population has been severely diminished, and tomorrow may be the day of extinction. However, the unchanging seasonal cycle passes by as always, now in the chilly days between autumn and winter. To be exact, time hasn't stopped, but the world can't go to tomorrow.
All that remain are chronologists (researchers who study time) and a few children. Time travel is finally achieved, and the young boys and girls are planned to be sent to the past and to the future in order to save the human species from extinction.
School becomes dominated by lectures regarding time travel for the aptitude test. The results classify the students into those who will go to the past, those who will go to the future, and those who will remain.
the boys who jump to the past to decipher the mysteries of the world
the girls who jump to the future in hope of witnessing prosperity
and the girls who cannot do anything more than plow their farms
"The New World" is a story about these children who search for a bright tomorrow.