Toaru Majutsu no Index (light novel)

To Aru Majutsu no Index (とある魔術の禁書目録（インデックス, To Aru Majutsu no Indekkusu, lit. A Certain Magical Index) is a Japanese light novel series written by Kazuma Kamachi and illustrated by Kiyotaka Haimura; the series is published by ASCII Media Works under their Dengeki Bunko imprint. It has been adapted into an anime, which was animated by J.C. Staff and aired between October 2008 through March 2009. The series has been adapted into a manga series, which began serialization in Monthly Shōnen Gangan in June 2007.

Overview
To Aru Majutsu no Index is set in a world where supernatural powers exist through science and magic exists through religion. Toma Kamijo is a high school student, with a power called the Imagine Breaker that can negate all magic, psychic, or divine powers, but it also undermines 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 Index Librorum Prohibitorum — 103,000 magical texts of the Church. 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. Toma's unusual power places him at the center of conflicts relating magicians and science-based espers in Academy City. As Toma 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.