In a world where magic and science coexist, Toma Kamijo, a student in Academy City, discovers he has a unique power - the Imagine Breaker. With this power, Toma can negate any supernatural ability, but it also comes at the cost of his own luck. When Toma meets Index, a young nun carrying 103,000 forbidden magical books in her mind, he becomes entangled in a conflict between sorcerers and espers vying for control of the world. As Toma's power grows stronger, he must navigate his way through the secret worlds of science and magic, all while protecting Index and uncovering the truth behind his special ability.

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