Toaru Majutsu no Index Wiki
Toaru Majutsu no Index Wiki

"August 11" (八月十一日 Hachi-gatsu Jū-ichi-nichi?) is the 20th chapter of the Toaru Kagaku no Railgun manga series.


A suddenly carefree Misaka Mikoto wanders the street. Her strange attitude puzzles Shirai Kuroko, who even 'tests' if Mikoto is an imposter or not by describing the underwear she's wearing (causing Mikoto to shock her). Kuroko brings up the topics of clones, ending with an off-hand question of what Mikoto would do if she met her own clone.

Before Mikoto answers, the chapter cuts to a different scene, three months before, inside a research centre of Academy City. It shows a fully matured clone of Mikoto (Misaka 9982) on her fourteenth day since 'birth', being released from her cultivation unit by the two scientists Kusakabe Yumi and Kanmi Eiga. She is put into Testament in order to install basic motor functions, speech and logic, but noticeably not emotions, and is given a basic health check-up. In this 'restoration room' she is given her first tea (which she considers to taste bad), given her first verbal description of the outside world, and informed of the 'original' (who, Yumi notes, could be considered 9982's "big sister"). The chapter ends with the scientists ordering 9982 to clean up a room filled with the bloodied corpses of 'Sisters', which 9982 acknowledges with no emotion.

Adapted To


In order of appearance:

New Characters


New Abilities

No new abilities were introduced in this chapter.


New Locations

  • Academy City
    • A certain Research Center



Cultural References

Unanswered Questions

  • What was Mikoto's answer to Kuroko's question on what she'll do if she had clones?