A Certain Scientific Accelerator is an ongoing manga series spun off directly from the pages of New York Times bestseller A Certain Scientific Railgun . Series author Kazuma Kamachi deepens the world of Academy City as portrayed in A Certain Scientific Railgun and A Certain Magical Index , giving the spotlight to the sinister Accelerator in this highly-anticipated spin-off. Welcome to a world where mysticism and science collide, and supernatural powers are derived from either science or religion. At the heart of this world is Academy City, an advanced metropolis whose population is comprised mostly of students. The majority of students are enrolled in the city's "Power Curriculum Program," where they must learn to master their latent psychic powers.