"Sisters" (妹達(シスターズ) Shisutāzu?, lit. "Little Sisters") is the 11th episode of the Toaru Majutsu no Index anime series. It was first broadcasted on December 13, 2008, with the script written by Nishizono Satoru, the episode storyboarded by Yanagisawa Tetsuya, and directed by Tsuruta Hiroshi.