"Resistance" (抗戦 Kōsen?) is the 64th chapter of the Toaru Kagaku no Railgun manga series. The chapter is about the unsuccessful attempts of Shokuhou Misaki to stop Kihara Gensei in the Exterior building, while Kamijou Touma and Sogiita Gunha fight against an increasingly powerful Misaka Mikoto (who is being forcibly transformed into a Level 6), while Shirai Kuroko deals with Kouzaku Mitori.
Walking through a corridor of the Exterior building, Gensei comments on how cautious Misaki is. Misaki tries stopping him with sleeping gas, but Gensei creates holes in a bulkhead to let the gas escape, revealing that he has access to multiple esper abilities through Multi-Skill.
Touma and Gunha fight against Mikoto. Touma explains that he might be able to revert Mikoto to normal by touching her with his right hand, but he can't get close to do this. Gunha creates an opening and throws a reluctant Touma towards Mikoto. Although Touma manages to touch Mikoto's shoulder, this only reverts the transformation at the shoulder and only temporarily. Gunha catches Touma and they discuss what to do next, Touma saying that they can only hold Mikoto back until other people shut off the source of her power. Mikoto's transformation progresses to a more advanced stage. Suddenly, Mikoto knocks Gunha into a building, though Gunha shrugs off the attack.
Kuroko contacts Uiharu Kazari to get her help in tracking down Mitori. At that moment, Mitori's puppet attacks her. Kuroko begins fighting, at the same time remembering how Mikoto trusted her.
Misaki sets off another trap, electrocuting the floor underneath Gensei, but this is also ineffectual. She asks Gensei what he's planning by transforming Mikoto into a Level 6, given that Accelerator should be the only one capable of reaching Level 6. Gensei clarifies that Accelerator is the only one who can reach Level 6 and remain stable; if Mikoto reaches Level 6, she will die (and Academy City will be destroyed in the process) but will also give others a brief glimpse into the territory of God. Misaki questions if he understands what he's saying, as he'll also die if this happens. Gensei opens holes in the wall and then pins Misaki to another wall with his abilities. He states that scientific advances always come with sacrifices, something that disturbs Misaki.
- Gensei explains his goal: to gain insight from Mikoto reaching Level 6, even though it will destroy Academy City as a result.
In order of appearance:
- Kihara Gensei
- Shokuhou Misaki
- Sogiita Gunha
- Kamijou Touma
- Misaka Mikoto
- Shirai Kuroko
- Uiharu Kazari
- Saten Ruiko
- Kouzaku Mitori
No new characters were introduced during this chapter.
- Mental Out with Exterior - Shokuhou Misaki, Level 5
- Unknown - Sogiita Gunha, Level 5
- Imagine Breaker - Kamijou Touma
- Electromaster (Railgun-variant) with Misaka Network - Misaka Mikoto, Level 5
- Teleport - Shirai Kuroko, Level 4
- Liquid Shadow - Kouzaku Mitori, Level 4
- Multi-Skill - Kihara Gensei
- There is a brief flashback to Toaru Kagaku no Railgun Manga Chapter 054, specifically the moment when Mikoto tells Kuroko she trusted her to protect her mother.