A Certain Magical Index season 1

The first season of the Japanese animated television series A Certain Magical Index, based on the light novel series of the same name written by Kazuma Kamachi and illustrated by Kiyotaka Haimura, follows the first meeting between Toma Kamijo, a high school student in the scientific-advanced Academy City whose right hand contains a unique power, and Index, a young nun from the Church of England whose mind has been implanted with 103,000 grimoires of the Index Librorum Prohibitorum. Produced by J.C.Staff, the season saw Hiroshi Nishikiori and Masanao Akahoshi respectively serving as director and series composition writer.

Atsushi Abe, Yuka Iguchi, Rina Satō, and Satomi Arai reprise their audio drama roles and are joined by voice cast members Shizuka Itō, Kishō Taniyama, Anri Katsu, Kimiko Koyama, and Nobuhiko Okamoto. The anime adaptation of the light novels was confirmed in June 2008 and adapts its first six volumes.

The first season consists of 24 episodes and ran on Chiba TV and AT-X from October 5, 2008, to March 19, 2009, with several other networks following hours or days later. A second season was announced in June 2010.