Touma Kamijou is the main protagonist of the light novel series A Certain Magical Index, created by Kazuma Kamachi. He is a high school student living in the city of Academy City, known for its advanced scientific research and supernatural abilities. Touma possesses a unique power called Imagine Breaker, which allows him to negate any supernatural abilities or powers that come into contact with his right hand. Despite his ability, Touma often finds himself in difficult situations, as he is frequently involved in conflicts between various factions, including magicians and espers. He is characterized by his strong sense of justice and willingness to help others, often putting himself in danger to protect those in need.