Toaru Majutsu no Index (TV + 4 Specials + Movie)

Synopsis:
Located in western Tokyo is the enormous Academy City. With a total population of over 2.3 million, roughly 80% of which are students, this city has a unique curriculum in place to develop supernatural abilities, and the students' abilities are rated in a range of six categories, from "powerless" at Level 0 to "super-powered" at Level 5.
A certain student, Kamijou Touma, is one of the students who live in Academy City. An unusual power resides in his right hand: the illusion-canceling "Imagine Breaker," capable of nullifying even divine protection. For that reason, he is rated as "powerless," which puts him in danger of flunking out, and he spends his life plagued by misfortune.
As a result of a white-robed Sister falling out of the sky at the start of one summer vacation, Kamijou's school life took an extraordinary turn. After meeting this girl, one "Index Librorum Prohibitorum," who claimed to be fleeing from the world of magic, Kamijou became caught up in all sorts of adventures. Through the balancing act of solving cases on both the science side, which controls Academy City, and the magic side, with which Index is linked, his circle of acquaintances gradually expands. Eventually, the Roman Orthodox Church, the largest denomination on the magic side, turns their attention toward Kamijou.
In response to the magic side, the science side's Academy City also goes into action. However, there are others who step forward to resist the actions of a world that has abruptly started turning hostile. They are "heroes" who have greatly altered the course of fate through their interactions with Kamijou.
They also put their lives on the line to stand against both sides, just as Kamijou Touma has.