Shinyaku Toaru Majutsu no Index Light Novel Volume 03

Publisher's Summary
Gremlin. A global enemy force that is a fusion of magic and science. It seems this mysterious organization that appeared suddenly after World War 3 is working in secret in Hawaii, America's 50th state.

Under the guidance of Leivinia, the boss of the British Golden-style magic cabal called the Dawn-Colored Sunlight, Kamijou and the others head to Hawaii. The group is made up of Kamijou Touma, Misaka Mikoto, Accelerator, Hamazura Shiage, Misaka Worst, and Kuroyoru Umidori. And just as they arrive at New Honolulu International Airport, an attack by Gremlin's magicians begins.

Gremlin's plot is advancing below the surface. The sole man in America who has realized this searches for a means of resisting them on his own. He is the kind of person that just has too much energy.

His name is Robert Katze. Known by all, he is the President of the United States.