| No. | Japanese release date | Japanese ISBN | English release date | English ISBN |
|---|
| 1 | November 10, 2007[1] | ISBN 978-4-8402-4107-6 | June 7, 2011[4][5] | ISBN 978-1-935934-00-4 |
|---|
- 1. "July 16" (七月十六日, "Shichi-gatsu Jū-roku-nichi")
- 2. "July 17, Part 1" (七月十七日①, "Shichi-gatsu Jū-shichi-nichi 1")
- 3. "July 17, Part 2" (七月十七日②, "Shichi-gatsu Jū-shichi-nichi 2")
- 4. "July 18, Part 1" (七月十八日①, "Shichi-gatsu Jū-hachi-nichi 1")
- 5. "July 18, Part 2" (七月十八日②, "Shichi-gatsu Jū-hachi-nichi 2")
- 6. "July 19, Part 1" (七月十九日①, "Shichi-gatsu Jū-ku-nichi 1")
- 7. "July 19, Part 2" (七月十九日②, "Shichi-gatsu Jū-ku-nichi 2")
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| Level 5 Electromaster, Mikoto Misaka and her kohai and Judgment member, Kuroko Shirai, meet up with Kuroko's partner, Kazari Uiharu. Soon, they encounter a bank robbery, which is stopped by Mikoto and Kuroko. Following an argument with Kuroko and a case of mistaken identity, Mikoto experiences a day as a member of Judgment searching for a lost bag. Later, Mikoto challenges her self appointed rival, Tōma Kamijō (the hero of A Certain Magical Index), to a fight but still can't win against his Imagine Breaker. As strange bombings take place, Mikoto accompanies Kazari and her classmate, Ruiko Saten, to the mall. There, the bomber tries to attack Kazari, due to a hatred towards members of Judgment, but is foiled by Tōma's power and is beaten by Mikoto. Finding it strange that the bomber's power was stronger than his level, Mikoto looks into a rumor about a device called "Level Upper" which supposedly boosts an esper's power. After failing to get some information out of some thugs due to another run in with Tōma, she learns that the bomber had fallen into a coma. |
| 2 | June 10, 2008[6] | ISBN 978-4-0486-7146-0 | September 27, 2011[4][7] | ISBN 978-1-935934-02-8 |
|---|
- 8. "July 20" (七月二十日, "Shichi-gatsu Hatsuka")
- 9. "July 21, Part 1" (七月二十一日①, "Shichi-gatsu Ni-jū-ichi-nichi 1")
- 10. "July 21, Part 2" (七月二十一日②, "Shichi-gatsu Ni-jū-ichi-nichi 2")
- 11. "July 24, Part 1" (七月二十四日①, "Shichi-gatsu Ni-jū-yokka 1")
- 12. "July 24, Part 2" (七月二十四日②, "Shichi-gatsu Ni-jū-yokka 2")
- 13. "July 24, Part 3" (七月二十四日③, "Shichi-gatsu Ni-jū-yokka 3")
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| Scientist Harumi Kiyama is brought in to help research into the coma victims, while Mikoto and her entourage talked about Level Upper. Meanwhile, Ruiko, who herself is a level 0, had discovered the Level Upper herself, but becomes conflicted on whether she should use it or not. Ruiko later confronts some thugs scamming someone over the Level Upper and is rescued by Kuroko, who has trouble against the leader's ability to distort light. Ruiko runs into her friends and decides to share the Level Upper with them, but they all later fall into a coma. Mikoto soon discovers that the mastermind behind the Level Upper is Harumi, who kidnaps Kazari and uses the power of all the Level Upper victims to become a Multi Skill user. Mikoto fights against her and is seemingly outmatched. |
| 3 | February 27, 2009[8] | ISBN 978-4-0486-7719-6 | February 14, 2012[4][9] | ISBN 978-1-935934-12-7 |
|---|
- 14. "July 24, Part 4" (七月二十四日④, "Shichi-gatsu Ni-jū-yokka 4")
- 15. "July 24, Part 5" (七月二十四日⑤, "Shichi-gatsu Ni-jū-yokka 5")
- 16. "July 24, Part 6" (七月二十四日⑥, "Shichi-gatsu Ni-jū-yokka 6")
- Special. "A Certain Student's Epilogue" (とある学徒の後日談集, "Toaru Gakuto no Epirōgu")
- 17. "July 25" (七月二十五日, "Shichi-gatsu Ni-jū-go-nichi")
- Special. "A Certain Two People's Job Training [Part 1]" (とある二人の新人研修[前篇], "Toaru Futari no Jobu Torēningu [Zenpen]")
- Special. "A Certain Two People's Job Training [Part 2]" (とある二人の新人研修[後篇], "Toaru Futari no Jobu Torēningu [Kōhen]")
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| Mikoto manages to get up close to Harumi and shock her, but upon doing so, she is able to see her memories. In those memories, Harumi was a teacher to a group of orphans who were later used in a horrendous experiment. As Harumi expresses her anger over not being able to find a cure for them, she suddenly loses control of Level Upper Network and spawns a creature known as AIM Burst. Whilst Mikoto fights the creature, Kazari uses an antidote program given to her by Harumi to help cure the Level Upper victims and weaken AIM Burst. Mikoto defeats it and Ruiko and the Level Upper victims reawaken. Before she is taken away by the Anti-skills, the city's police, Harumi hints both she and Mikoto are similar than she thinks. Afterwards, Mikoto and Kuroko are punished for returning to the dorms late and are forced to clean the pool, where Kuroko becomes jealous of Mikoto's polite treatment of other girls. The bonus chapters tell of Kuroko and Kazari's early days of Judgment, and a bank robbery that went wrong due to Kuroko's carelessness. |
| 4 | October 27, 2009[10] | ISBN 978-4-0486-8169-8 | May 8, 2012[4][11] | ISBN 978-1-935934-18-9 |
|---|
- 18. "August 10, Part 1" (八月十日①, "Hachi-gatsu Tōka 1")
- 19. "August 10, Part 2" (八月十日②, "Hachi-gatsu Tōka 2")
- 20. "August 11" (八月十一日, "Hachi-gatsu Jū-ichi-nichi")
- 21. "August 15, Part 1" (八月十五日①, "Hachi-gatsu Jū-go-nichi 1")
- 22. "August 15, Part 2" (八月十五日②, "Hachi-gatsu Jū-go-nichi 2")
- 23. "August 15, Part 3" (八月十五日③, "Hachi-gatsu Jū-go-nichi 3")
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| After looking into a strange incident involving envelopes containing cash cards, Mikoto runs into Shinobu Nunotaba, who identifies her as 'the original'. Curious as to if this had anything to do with rumors involving clones of her, Mikoto investigates into it and learns that a clone program was in development but was reportedly canceled due to their low levels. However, a few days later, Mikoto runs into one of these clones, Misaka 9982. After spending the day with her, Mikoto investigates and learns that 20,000 clones are being used in a new program to boost the strongest Level 5 esper, Accelerator, into a Level 6 esper. Mikoto arrives at a fight scene just in time to see Misaka 9982 be killed by Accelerator. |
| 5 | June 26, 2010[12] | ISBN 978-4-0486-8686-0 | August 7, 2012[4][13] | ISBN 978-1-935934-78-3 |
|---|
- 24. "August 15, Part 4" (八月十五日④, "Hachi-gatsu Jū-go-nichi 4")
- 25. "August 16" (八月十六日, "Hachi-gatsu Jū-roku-nichi")
- 26. "August 19, Part 1" (八月十九日①, "Hachi-gatsu Jū-ku-nichi 1")
- 27. "August 19, Part 2" (八月十九日②, "Hachi-gatsu Jū-ku-nichi 2")
- 28. "August 19, Part 3" (八月十九日③, "Hachi-gatsu Jū-ku-nichi 3")
- 29. "August 19, Part 4" (八月十九日④, "Hachi-gatsu Jū-ku-nichi 4")
- 30. "August 19, Part 5" (八月十九日⑤, "Hachi-gatsu Jū-ku-nichi 5")
- Special. "Wacky Judgement" (チキチキ風紀委員, "Chikichiki Jajjimento")
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| Mikoto angrily fights against Accelerator, but her attacks are proved futile against his ability. Their fight is stopped by the other Misaka clones, who show no emotion about being used as guinea pigs. The next morning, Mikoto learns from Shinobu about her involvement in the Sisters program, and decides to stop the experiments herself, striving to destroy all of the labs involved. As the higher ups notice her attacks, they hire the bounty hunter team, ITEM, to protect one of the remaining labs, which Mikoto attacks, whilst they move the experiment data. Mikoto soon comes across one of ITEM's members, Frenda, but manages to defeat her. However, she is soon confronted by ITEM's leader and Level 5 esper, Shizuri Mugino. Meanwhile, Shinobu tries to sneak into the other lab in order to install emotions into the sisters, hoping to stop the experiments by pity. However, she is caught by ITEM's Saiai Kinuhata, with her program being apprehended by the Misaka Network administrator, Last Order. Mikoto eventually manages to defeat Shizuri by using Frenda's bombs against her. Upon investigating the remaining lab, she assumes that the experiments had been stopped and later encounters Tōma. |
| 6 | February 26, 2011[14] | ISBN 978-4-04-870350-5 | December 11, 2012[4] | ISBN 978-1-937867-03-4 |
|---|
- 31. "August 20, Part 1" (八月二十日①, "Hachi-gatsu Hatsuka 1")
- 32. "August 20, Part 2" (八月二十日②, "Hachi-gatsu Hatsuka 2")
- 33. "August 21, Part 1" (八月二十一日①, "Hachi-gatsu Ni-jū-ichi-nichi 1")
- 34. "August 21, Part 2" (八月二十一日②, "Hachi-gatsu Ni-jū-ichi-nichi 2")
- 35. "August 21, Part 3" (八月二十一日③, "Hachi-gatsu Ni-jū-ichi-nichi 3")
- 36. "August 21, Part 4" (八月二十一日④, "Hachi-gatsu Ni-jū-ichi-nichi 4")
- 37. "August 21, Part 5" (八月二十一日⑤, "Hachi-gatsu Ni-jū-ichi-nichi 5")
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| Mikoto's reunion with Tōma is short lived when she encounters Misaka 10032, who reveals that the experiments are still continuing. Worse yet, Mikoto learns that an even greater number of facilities have picked up the experiment. Realizing that she is against Academy City itself, Mikoto goes to hack into the city's supercomputer, Tree Diagram, in order to change the results. However, when she gets there, she learns that Tree Diagram has actually been destroyed for weeks, with the experiments continuing regardless. Believing the situation to be hopeless and feeling responsible, a distraught Mikoto considers letting herself be killed by Accelerator in order to throw off the Tree Diagram's predictions and hopefully save the Sisters. However, Tōma stands in her way, refusing to let her carry out her suicide even after being shocked several times. Tōma then deduces that if he, a Level 0, can defeat Accelerator, the foundation for the Level 6 theory would be ruined. Despite Mikoto's objections, Tōma confronts Accelerator in time to save Misaka 10032, where he finds his Imagine Breaker to be effective against him in close range. However, Accelerator manages to counter Tōma by launching projectiles against him and tries to kill him by creating a plasma attack. Wishing to save him, Mikoto convinces Misaka 10032 to tell the Misaka sisters to disrupt the wind Accelerator needs for his attack. |
| 7 | December 17, 2011[15] | ISBN 978-4-04-870976-7 | April 2, 2013[4] | ISBN 978-1-937867-21-8 |
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- 38. "August 21, Part 6" (八月二十一日⑥, Hachi-gatsu Nijūichi-nichi 6)
- 39. "August 22 (八月二十二日, Hachi-gatsu Nijūni-nichi)
- Special. "The Iron Bridge is a Sign of Love" (鉄橋は恋の合図, Tekkyō wa Koi no Aizu)
- 40. "Clique, Part 1" (派閥①, Habatsu 1)
- 41. "Clique, Part 2" (派閥②, Habatsu 2)
- 42. "Rainbow's End"
- 43. "Negotiation" (交渉, Kōshō)
- 44. "Opening" (開会, Kaikai)
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| Without the wind Accelerator needs for his plasma attack, Tōma deals him the final blow, ending the experiments. As thanks, Mikoto gets Ruiko to teach her how to bake cookies for him. Later, a student named Mitsuko Kongō transfers into Tokiwadai and decides that she wants to start her own clique. Although her dream is abruptly cut short, she becomes friends with Mikoto and Kuroko's classmates, Maaya Awatsuki and Kinuho Wannai. However, Mitsuko's actions attract the attention of Misaki Shokuhō, the other Level 5 of Tokiwadai, warning Mikoto of the repercussions. As Kazari becomes downhearted after Kuroko becomes injured during one of her missions, Ruiko brings her to chase after a rainbow and cheers her up. Meanwhile, the Academy City-wide Daihaiseisai sports festival begins, with the organizers getting assistance from Misaki and Level 5 esper Gunha Sogiita. The event begins with Mikoto and Mitsuko participating in a three-legged race. |
| 8 | October 27, 2012[16] | ISBN 978-4-04-891101-6 | August 6, 2013[4] | ISBN 978-1-937867-39-3 |
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- 45. "Ambush" (伏兵, Fukuhei)
- 46. "Quickening" (胎動, Taidō)
- 47. "Encounter" (遭遇, Sōgū)
- 48. "Erosion" (浸蝕, Shinshoku)
- 49. "Trust" (信頼, Shinrai)
- 50. "The Battle Begins" (開戦, Kaisen)
- 51. "Analysis" (解析, Kaiseki)
- 52. "Dark Side" (暗部, Anbu)
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| Misaka 10032 is mistaken for Mikoto and is dragged in to participate as Tokiwadai competes against a rival school, who manages to win thanks to some curious intel. During the match, she is secretly bitten by a robotic mosquito, later falling unconscious and getting kidnapped. Meanwhile, Ruiko attempts to search one of the stadiums to search for a strange substance, only to be thwarted by security. During that time, Kazari finds some intriguing information whilst looking up urban legends, but mysteriously deletes it before the others return. The next day, Mikoto learns that Misaka 10032 has been kidnapped, discovering that Misaki is involved somehow. Worse yet, she is put under the watch of Misaki's clique and discovers that Kuroko, Kazari and Ruiko no longer have any memories of her. Unable to escape from Misaki's clique, Mikoto explains the situation to Mitsuko, who decides to search for Misaka 10032 in her place. Finding Misaka 10032's cat, looking to take it to an esper who can read its memories, Mitsuko soon finds herself attacked by a man named Baba and his robotic dogs. During the battle, Mitsuko is hit by one of Baba's mosquitoes, which paralyzes her and leaves her helpless. Discovering the situation, Maaya and Kinuho have Ruiko get Mitsuko to safety whilst they fight against Baba, using their powers and intuition to stop him and retrieve the antidote. Baba attempts to exact revenge using an experimental robot, but it is destroyed by Mikoto, who became enraged after seeing Mitsuko's condition. |
| 9 | August 27, 2013[2] | ISBN 978-4-04-891844-2 | April 15, 2014[4] | ISBN 978-1-937867-79-9 |
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- 53. "Flaw" (瑕疵, Kashi)
- 54. "Cooperation" (連携, Renkei)
- 55. "In the Same Boat" (同舟, Dōshū)
- 56. "Divide and Conquer" (分進, Bunshin)
- 57. "Investigation" (捜索, Sōsaku)
- 58. "Suspicion" (疑心, Gishin)
- 59. "Reminiscence" (追憶, Tsuioku)
- 60. "Friends" (友達, Tomodachi)
- 61. "SYSTEM"
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| As Mikoto investigate the whereabouts of Misaka 10032, Ruiko gets some information from Misaka 10032's cat and realizes she, Kazari and Kuroko have known Mikoto before. Mikoto is confronted by Mitori Kouzaku, a colleague of Baba, who has taken both her mother and Kazari hostage but is able to rescue them thanks to Kuroko while Mitori is able to escape using her liquid metal puppet. After Mikoto hacks the information Kazari deleted to find and meet Misaki, Mikoto learns from Misaki that she and her subordinate Kites Knockraven were actually rescuing Misaka 10032 as Baba and Mitori's group are working with Gensei Kihara, Harumi's former boss and the proponent of Accelerator's Level 6 project, who is after Misaka 10032 so he can gain access to the Misaka Network. Despite being angry with Misaki for messing with her and her friends as she did not trust them, Mikoto decides to work with Misaki to stop Gensei. Meanwhile, after encountering Tōma, Ruiko does her own investigation but is almost killed by Mitori but is saved by Mitori's colleague, Xochitl, who knows Ruiko. Mikoto and Misaki arrives where they believe Gensei is but realizes they been fooled as Gensei is heading towards where "Exterior" is held. It is revealed Misaki was friends with a prototype Misaka clone named Dolly, whose death made her discovered the scientists working with them where planning on killing her after completing Exterior but Misaki was able to escape. Mikoto learns from Misaki that Exterior is a machine that cultivated and enlarged a part of her brain to allow anyone to use her powers tenfold. Despite their attempts to stop him, Gensei manages to get Misaka 10032, and using both the power of Exterior and the Misaka Network, turns Mikoto into a Level 6 being. |
| 10 | July 26, 2014[17] | ISBN 978-4-04-866698-5 | April 21, 2015[18] | ISBN 978-1-626920-39-2 |
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- 62. "Joining the Battle" (参戦, Sansen)
- 63. "Chaos" (渾沌, Konton)
- 64. "Resistance" (抗戦, Kōsen)
- 65. "Defeat" (敗北, Haiboku)[n 1]
- 66. "Miscalculation" (誤算, Gosan)[n 2]
- 67. "Right Hand" (右手, Migite)[n 2]
- 68. "Dolly" (DOLLY)[n 2]
- 69. "Closure" (閉会, Heikai)[n 2]
- 70. "Promise" (約束, Yakusoku)[n 3]
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| 11 | October 27, 2015[19] | ISBN 978-4-04-865431-9 | — | — |
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- 71. "Indian Poker" (インディアンポーカー, Indian Pōkā)
- 72. "BLAU"
- 73. "Observation" (注視, Chūshi)
- Special. "A Certain Boy's Episode" (とある少年の幕間挿話, Toaru Shōnen no Episōdo)
- 74. "Precognition" (予知, Yochi)
- 75. "Prevention" (阻止, Soshi)
- 76. "Selfishness" (我儘, Wagamama)
- 77. "Dream" (夢, Yume)
- 78. "Breasts" (胸, Mune)
- 79. "Revelation" (啓示, Keiji)
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