Toaru Majutsu no Index: Endymion no Kiseki

Before the Academy City space elevator "Endymion" is finished, Kamijou and Index meet a level 0 girl named Arisa. The Magicians target her and launch an attack on Academy City. A woman named Shattoaura leads a unit from Academy City in response. Kamijou and Index discover through Stiyl that Arisa is central to an impending conflict between Magic and Science.