In a future not too distant from ours, Nanagoo City is a beautiful city in Japan surrounded by mountains and ocean-sides. The sensitive, adolescent girls who live there are each opening up doors to their own, unique possibilities. No one wants to forget the path they take to adulthood.

(Source: Anime News Network)

Note: While 30-sec pilot previews for all 7 episodes have been uploaded to YouTube, only the first 2 episodes have been screened through live events in 2015 and 2016 respectively. The 2nd episode had also been uploaded to YouTube for a limited-time to promote an upcoming Prism Nana stageplay. It is unknown if the third episode was released at all, and no information regarding the remaining four episodes exists.

(Source: Lost Media Wiki)