Toaru Majutsu no Index Wiki

"Chaos" (渾沌 Konton?) is the 63rd chapter of the Toaru Kagaku no Railgun manga series. The chapter details the on-going struggles of Misaka Mikoto as she is transformed by the efforts of Kihara Gensei in an another attempt to create a Level 6, while Shokuhou Misaki tries to deal with Gensei and Shirai Kuroko with Kouzaku Mitori, and Kamijou Touma gets a little unexpected help from an unlikely source.


The chapter begins with an announcement that an enormous cumulonimbus cloud is passing over Academy City and that people should move indoors - the cover story to evacuate the city. Sogiita Gunha sees lightning shooting up from the ground and decides to investigate.

On the roof of the Exterior building, Kuroko confronts Mitori's puppet. The puppet attacks, so Kuroko teleports out of the way and to where Misaki's group is. Misaki asks Kuroko to teleport Keitz Nokleben and Misaka 10032 away, then to teleport themselves (Misaki and Kuroko) into the building. Now alone, Mitori's puppet comments on how quickly Kuroko found her data in the Bank.

Inside, Kuroko says she doesn't trust Misaki, but Misaki points out that it's in their mutual interest to work together. Misaki uses her ability to explain the situation to Kuroko, then Kuroko teleports away.

Kuroko heads over to Mikoto's location, thinking about Misaki's information: Mitori is probably guiding Mikoto's actions, she is probably close to Mikoto, and it may be possible to stop Mikoto by taking down her guide. Mitori notices Kuroko's approach and asks Gensei to handle Mikoto, as she must focus on defending herself.

Touma reaches Mikoto, who knocks him away with various attacks. She is unable to see him properly, something exacerbated by Mitori telling her it's just a "little fly" trying to hinder her.

Back in the Exterior building, Misaki looks at Gensei from above, noting that he probably wants to get the release code for Exterior's limiter from her. She decides to implement a countermeasure, which begins with memorising the code and erasing the data, though the rest is not revealed.

Touma is able to negate Mikoto's lightning, but becomes concerned when she creates a massive ball of metal and attempts to drop it on him. Suddenly, Gunha arrives and destroys the ball with a punch. He tells Touma to leave as he'll handle the rest, resulting in a brief argument about how to handle the situation. Mikoto attacks both of them with lightning, which Touma negates and Gunha punches down to the ground. The two boys are confused by each other's abilities. They introduce themselves to each other and prepare to take on Mikoto together.

Adapted To

Major Events

  • Kamijou Touma and Sogiita Gunha begin fighting Misaka Mikoto.


In order of appearance:

New Characters

No new characters were introduced during this chapter.


New Abilities



  • Chronologically, this would mark the second time Touma obtains help from a Level 5.

Unanswered Questions

  • What is Misaki's plan to defend Exterior?



v  e
Toaru Kagaku no Railgun
Volume 1 1234567
Volume 2 8910111213
Volume 3 141516Sp17Sp1Sp2
Volume 4 181920212223
Volume 5 24252627282930
Volume 6 31323334353637
Volume 7 3839Sp4041424344
Volume 8 4546474849505152
Volume 9 535455565758596061
Volume 10 626364656667686970
Volume 11 71727373.5747576777879
Volume 12 808182838485868788
Volume 13 8990919293949596
Volume 14 979899100101102103104105106
Volume 15 107108109110111112113114115
Volume 16 116117118119120121122123124125126127
Volume 17 128129130131132132.5132.75133134135136
Chapters Not Yet in Volume Format 136.5137138139140
Special 17.524.525.542.596.5122.5