Nanako SOS is a seinen manga series created by Hideo Azuma which ran in Popcorn and Just Comic from April 1980 to July 1986. The series was adapted into 39-episode anime TV series produced by Kokusai Eiga which aired on the Fuji Television network from April 2, 1983 to December 24, 1983. Azuma created additional manga stories which ran in Azuma Magazine from July 2001 to July 2004. Enoki Films held the North American distribution rights of TV series, under the name Nana the Supergirl, though the series was never aired in North America. The TV series has also aired in Italy, France, Germany and Russia.