The second season is focused on The Sisters Arc. Lasting only a single volume in the Toaru Majutsu no Index light novels, it was later expanded greatly in the Toaru Kagaku no Railgun manga.
Status: Finished Airing
Aired: Apr 12, 2013 to Sep 27, 2013
Producers: J.C.Staff, Geneon Universal Entertainment, FUNimation Entertainment, Movic, AT-X, Warner Bros., ASCII Media Works
Duration: 24 min. per episode