An English language dub began streaming on Funimation's website in September 2012 and was released on DVD on December 11, 2012.[13][14][15] The first season aired in North America on the Funimation Channel on January 21, 2013.[16] A second season, titled A Certain Magical Index II, aired in Japan between October 8, 2010 and April 1, 2011,[17] and was also streamed on Nico Nico Douga.[18] The limited edition of the first BD/DVD volume of Index II, released on January 26, 2011, contained a A Certain Scientific Railgun mini-novel.[19] The first season of the English dub was released in 2012 while season 2 was released in 2014.