The official website for Atto’s Non Non Biyori manga series announced that the franchise is getting a new OVA to ship with a special edition of the Non Non Biyori Remember mini-series manga volume. The OVA will serve as the 13th episode of the Non Non Biyori Nonstop anime.
The original Non Non Biyori manga launched in Kadokawa’s Monthly Comic Alive magazine in 2009 and ended its 11-year run on February 27. The Non Non Biyori Remember manga launched on May 27. The manga received three anime seasons, two OVAs, and a film titled Non Non Biyori Vacation, which premiered in August 2018. The third season, Non Non Biyori Nonstop, premiered on January 10 and aired for 12 episodes. Crunchyroll streamed all three seasons as they aired in Japan.
Seven Seas Entertainment licensed the manga in English and describes the series as:
Welcome to the most isolated school in all Japan: Asahigaoka Branch School. With only five students enrolled and cows roaming through the town, the term “boonies” doesn’t even begin to describe it. But this doesn’t mean Asahigaoka is void of adventure. Whether it’s outfoxing a crafty rabbit, surviving an ever-escalating sibling battle, or impressing the cool new transfer student, the endearing kids at Asahigaoka Branch School prove you don’t need the big city to have a big-hearted story. Join the precocious first-grader Miyauchi Renge, squabbling sisters Koshigaya Natsumi and Komari, and ultra-sophisticated transfer student Ichijo Hotaru as they explore the funny, strange, and adorable world of Non Non Biyori.
Source: Non Non Biyori Twitter account