Galilei Donna: Storia di tre sorelle a caccia di un mistero (ガリレイドンナ Garireidonna?, lit. Galilei Donna: the story of three sisters in the search of a mistery) is an original television anime series produced by A-1 Pictures and directed by Yasuomi Umetsu. Episode 1 was previewed at a screening in Tokyo on October 5, 2013. Regular broadcasting began on October 10, 2013.