Toaru Majutsu no Index Light Novel Volume 13 was first published on April 10, 2007. It the final part of the two-novel storyline that was first presented in the previous novel. It features both Touma and Accelerator as protagonists, with Touma facing off against Vento of the Front of the magic side, while Accelerator faces off against Kihara Amata of the science side. Due to the resulting aftermath of the events in the novel, it is considered the turning point of the series both in the story.
- Chapter 6: Streets Beaten by the Cold Rain — Battle_Preparation.
- Chapter 7: Changing Raindrops into the Color of Blood — Revival_of_Destruction.
- Chapter 8: God's Right Seat and the Imaginary Number District — Fuse=KAZAKIRI.
- Chapter 9: The Differences of Obstacles that Stand in One's Way — Two_Kinds_of_Enemies.
- Chapter 10: Their Respective Battlefields — The_Way_of_Light_and_Darkness.
- Epilogue: The Paths Which the Winners and the Losers Must Go Through — The_Branch_Road.
|어떤 마술의 금서목록 13|
|Release Date||December 10, 2008|
|Number of Pages||362 pages|
| 학원도시에 로마 정교 ‘하느님의 오른쪽 자리’의 한 사람인 ‘전방의 벤트’가 침입했다.|
그녀가 다루는 수수께끼의 마술에 의해 도시 기능은 완전히 마비되고
|A Certain Magical Index Volume 13|
|Release Date||November 14, 2017|
|Number of Pages||256 pages|
|Accelerator's search for Last Order has taken a turn for the worst. His superhuman powers have a strict time limit, his enemies know exactly how to beat him, and he has no idea where he sent the little girl he's supposed to protect. Luckily for him, the first one to stumble across her is a certain unlucky teenage boy. But while trying to get Last Order back home, Touma Kamijou realizes that a much more dangerous player has entered the game. A storm has arrived in Academy City, and her name is God's Right Seat, Vento of the Front!|