On the day Tōma Kamijō and Index see Academy City's space elevator, Endymion in the distance, they meet a Level 0 girl with an amazing singing voice, Arisa Meigo. As the three enjoy their time together after school, magic-user Stiyl Magnus suddenly attacks them. His target: Arisa. Why would a girl from the science side be targeted by someone from the magic side, Tōma wonders. In the chaos of Stiyl's attack, he tells Tōma, Index and Arisa that she might cause a war between the magic side and the science side.
阿部敦
as Kamijou Touma (voice)
佐藤利奈
as Mikoto Misaka (voice)
三澤紗千香
as Arisa Meigo (voice)
日笠陽子
as Shutaura Sequenzia (voice)
岡本信彦
as Accelerator (voice)
佐倉綾音
as Ladylee Tangleroad (voice)
ささきのぞみ
as Misaka Sisters (voice)
新井里美
as Shirai Kuroko (voice)
豊崎愛生
as Kazari Uiharu (voice)
勝杏里
as Motoharu Tsuchimikado (voice)
瀬戸麻沙美
as Marie Spearhead (voice)
伊藤かな恵
as Ruiko Saten (voice)
