To Aru Majutsu no Index

In a world where science grants supernatural powers and religion gives rise to magic, high school student Touma Kamijou has a power that can defeat them all. His Imagine Breaker also brings him terrible luck, while its immeasurable strength leaves him classified at supernatural level zero. One day, Touma finds a girl in white hanging from his balcony. She says sorcerers are chasing her, and he learns she is a Church of England nun whose memories have been forcibly replaced by Index-Librorum-Prohibitorum: the Church’s 103,000 forbidden texts.