Volume 11 of Atto’s Non Non Biyori manga announced that a new television anime project has been green-lit. While the announcement was made, there are no other details as to what the anime could be. It is unknown if it will be a third season, an OVA, or some other form of anime just yet.
There have been two seasons of the show so far: Non Non Biyori, which aired in 2013 fall anime season, and Non Non Biyori Repeat which aired in the 2015 summer anime season. Both seasons ran for 12 episodes each. Both seasons are licensed by Sentai Filmworks for North American distribution. The manga debuted in the Comic Alive magazine on September 26, 2009 and still in serialization today!
MyAnimeList.net describes the story of Non Non Biyori as follows:
Asahigaoka might look like typical, boring countryside to most; however, no day in this village can ever be considered colorless thanks to five students of varying ages occupying the only class in the only school in town. The youngest student is first grader Renge Miyauchi, who brings an unadulterated wit, curiosity, and her characteristic catchphrase, “Nyanpasu!” Then there are the Koshigaya siblings consisting of the quiet ninth grader and elder brother Suguru, diminutive eighth grader Komari, and the mischievous seventh grader Natsumi. The recent arrival of Tokyo-raised fifth grader Hotaru Ichijou, who appears overdeveloped for her age and thus naturally holds an air of maturity, rounds out this lively and vibrant group of five classmates.
Based on the manga penned and illustrated by Atto, Non Non Biyori chronicles the not-so-normal daily lives of this group of friends as they engage in their own brand of fun and frolic, and playfully struggle with the realities of living in a rural area.