- Kiri Airport is a fictional airport mentioned in the anime series "A Certain Magical Index" and its spin-off "A Certain Scientific Railgun". It is located in Academy City, a technologically advanced city that is the setting for the series. Kiri Airport is one of the major airports in Academy City and serves as a transportation hub for both the residents of Academy City and visitors to the city. Within the series, several important events and story arcs take place at Kiri Airport.