Toaru Kagaku no Railgun Manga Chapter 066

Miscalculation (誤算) is the 66th chapter of the Toaru Kagaku no Railgun manga was released on February 27, 2014. The chapter involves Shirai Kuroko's continued efforts against Kouzaku Mitori and her eventual victory, as well as Shokuhou Misaki's final ruse against Kihara Gensei.

Synopsis
Kuroko ambushes Kouzaku in the sewers. Kouzaku is shocked that her camera, out of the thousands around, had been hacked with dummy footage, to which Kuroko replies that she had the ultimate partner for that. Kuroko then declares that she has nowhere left to run. Cornered and with no time to call her Liquid Shadow puppet, Kouzaku reaches for her knives, thinking about how she used the sewers not only to hide but also in case she was tracked down, as the narrow passage limits teleportation. She then plans to shoot Kuroko with her ballistic knife when she teleports to avoid her first knife, taking advantage of her lag, taking both of them down if she attacks via teleportation instead. As Kuroko moves forward, Kouzaku throws the first knife, but to her surprise instead of teleporting Kuroko intercepts it with her hand. Not reacting fast enough, Kouzaku is then punched and then kicked down by Kuroko. Screaming, she lunges at Kuroko with the second knife but Kuroko teleports and kicks her in the back of the head. As she falls in battle, Kouzaku can only think of Dolly before losing consciousness.

Back with Gensei, Misaki's gamble pays off. Gensei collapses upon activating the release code, and Exterior begins to dissolve. Misaki regains consciousness and figures out what she must have done.

In a flashback, Misaki considered the low chance of her trapping Gensei with the facility's defenses, whether or not she still needs Exterior, the need to heal the Sisters of the virus and that it is likely her last chance to capture Gensei. As such, her gamble was using her power to switch her own concepts of the limiter release code with the self-destruct code, hoping that Gensei will mistakenly take the self-destruct code and destroy Exterior himself (Misaki couldn't do so herself because Gensei has the access rights to Exterior).

Thus Misaki wins against Gensei.

Major Events

 * Kuroko defeats Kouzaku.
 * Kouzaku is shown to have known Dolly.
 * Exterior is destroyed, leading to the defeat of Gensei.

Characters
By order of appearance:
 * Shirai Kuroko
 * Kouzaku Mitori
 * Dolly
 * Shokuhou Misaki
 * Kihara Gensei

New Characters
No new characters were introduced during this chapter.

Abilities

 * Teleport - Shirai Kuroko, Level 4
 * Liquid Shadow - Kouzaku Mitori, Level 4 (flashback-only)
 * Mental Out - Shokuhou Misaki, Level 5

New Abilities
No new abilities were introduced in this chapter.

Locations

 * Academy City
 * Exterior

Trivia

 * The chapter was serialized in Dengeki Daioh as Chapter 68 but was renumbered for the tankōbon version due to Chapter 65 merging three magazine chapters into one.