Mirai e no Tegami: Kono Michi no Tochuu kara
Japanese title: みらいへの手紙~この道の途中から~
Alternative titles: Letter to the Future: Midway Along the Path
Type: ONA
Source: Original
Episodes: 2
Status: Finished Airing
Aired: Feb 15, 2016 to Mar 6, 2017
Duration: 15 min per ep
Rating: G - All Ages
Studios: Gaina
Genres: Drama
Themes: Music

Gainax's Fukushima-based animation studio is working on a project for Fukushima Prefecture which will highlight the area's recovery efforts since the 2011 Touhoku earthquake and tsunami and the disaster at the Fukushima Daiichi Nuclear Power Plant. 

(Source: Crunchyroll)