A Certain Magical Index light novel series has inspired two television anime series, a 2013 anime film, and multiple manga adaptations.
Seven Seas Entertainment is releasing the A Certain Scientific Railgun manga and the A Certain Scientific Accelerator manga in English, and Yen Press is releasing the A Certain Magical Index manga in English.
As the title indicates, the game is a collaboration between Kazuma Kamachi’s A Certain Magical Index fantasy light novel series and Sega’s Virtual-On robot-fighting video games.
Yen Press is releasing the original light novel series in English, and Funimation has released all of the anime adaptations in North America outside of the A Certain Scientific Railgun OVA.