A Certain Magical Index

is a Japanese light novel series written by Kazuma Kamachi and illustrated by Kiyotaka Haimura, which has been published by ASCII Media Works under their Dengeki Bunko imprint since April 2004. Yen Press have licensed the novels in North America. A manga adaptation by Chuya Kogino began serialization in Monthly Shōnen Gangan from May 2007. J.C.Staff produced two 24-episode anime series between 2008 and 2011. An animated film was released in February 2013. The anime adaptations are licensed in North America by Funimation. The third season has been announced and scheduled to premiere on October 2018.

The side-story manga series,, began serialization in Dengeki Daioh in December 2013.

Plot
Toaru Majutsu no Index is set in a city of scientifically advanced superhuman students, but in a world where magic is also real. Tōma Kamijo's right hand, the Imagine Breaker, will negate all magic, psychic, or divine powers, as well as his own luck. One day he finds a young girl hanging on his balcony railing named Index. She turns out to be a nun from the Church of England, and her mind has been implanted with the —all the magical texts the Church has removed from circulation. His encounter with her leads him to meet others from the secret world of science and magic and an adventure with his friends where science and magic collide. Tōma's unusual power places him at the center of conflicts relating magicians and science-based in Academy City. As Tōma tries to help and protect his friends, he learns the people he knows are not as they appear and begins to attract the attention of magicians and espers alike as they try to unravel the secrets of Academy City and Index.

Official

 * Anime Series Official Site (Japanese)

Other Sources

 * Wikipedia Article on Toaru Majutsu no Index

Other Wikis

 * Toaru Majutsu no Index (French)
 * Toaru Majutsu no Index (Chinese)
 * Toaru Majutsu no Index (Spain)
 * Toaru Majutsu no Index (Italian)
 * Toaru Majutsu no Index (Russian)
 * Toaru Majutsu no Index (Portuguese do Brasil)