Seven Seas Entertainment is releasing the A Certain Scientific Railgun manga in English, and Yen Press is releasing the A Certain Magical Index manga in English.
Kazuma Kamachi’s A Certain Magical Index light novel series has inspired three television anime series, a 2013 anime film, and multiple manga adaptations.
Yamaji began the spinoff series about the A Certain Magical Index character Accelerator in Monthly Comic Dengeki Daioh in 2013.
A Certain Scientific Railgun spinoff manga has also inspired three television anime adaptations and an original video anime (OVA).