Kamijou Touma 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 Academy City, a place where science and magic coexist. Known for his unique ability called Imagine Breaker, he can negate supernatural powers, making him a key figure in conflicts involving both magic and science. Touma is characterized by his strong sense of justice and willingness to help others, often putting himself in danger to protect those in need. Despite his often unlucky circumstances, he remains determined and resilient, earning the respect of various characters, including Index and Misaka Mikoto.