Toaru Majutsu no Index Wiki

"August 15, Part 2" (八月十五日① Hachi-gatsu Jū-go-nichi ②?) is the 22nd chapter of the Toaru Kagaku no Railgun manga series, released on June 27, 2009.


Misaka Mikoto confronts Misaka 9982, asking who she is, to which Misaka 9982 just replies with "Mya". Mikoto freezes up, unsure of what Misaka 9982 means. It turns out that Misaka 9982 was referring to the noise that the cat in the tree made, which ran up there as a result of the use of Misaka 9982's electrical ability. Mikoto shouts at Misaka 9982, repeating her demand to know who she is, but Misaka 9982 plays upon Mikoto's compassion of small animals. Misaka 9982 has Mikoto get on hands and knees and stands on her back to save the cat. However, the cat is instinctively frightened of the weak electricity coming off from the Electromasters' bodies. Mikoto shouts in frustration as she realizes that Misaka 9982 evaded the question once again and asks her if Misaka 9982 is Mikoto's clone. Mikoto asks why she exists, due to the dissolution of the project, to which Misaka 9982 asks for the confirmation code. As Mikoto is unable to give her the code, Misaka 9982 is no longer willing to answer her questions. Mikoto threatens Misaka 9982, but is (obviously) unable to hurt her and instead lets her go.

Mikoto decides to follow Misaka 9982, hoping to be led to the institution or research centre where the clone was created. However, she realizes the significance of the term 'Sisters' and shouts her questions, frustrated. A ice-cream truck passes the arguing sisters and the sympathetic ice-cream salesman stops gives two ice-creams to Misaka 9982 and Mikoto, to try to 'heal' their relationship. Misaka 9982 compliments the ice-cream salesman for the great ice-cream and he drives off. Mikoto, distracted by the salesman'd words, doesn't notice Misaka 9982 eating her ice-cream. Misaka 9982 then decides to go for some hot tea, with Mikoto accompanying her.

After an entire day of chasing Misaka 9982 around, she informs Mikoto that she would not be returning to her creators. Mikoto rifles through her pockets for her phone, intending to try decrypting the passcode Misaka 9982 mentioned earlier, causing the previously won Gekota badge to fall out. Mikoto tests out the look by pinning it onto Misaka 9982's jumper, but the clone considers it childish. An embarrassed Mikoto reaches out to take back the badge, but her hand is slapped away. After a flurry of attempts, Misaka 9982 successfully fends off Mikoto. She claims that ownership of the badge transferred when Mikoto attached it to her, and notes that it's the first gift she received from her (although she does wish she got something better).

Mikoto says goodbye to Misaka 9982, wanting to find the creators by herself, and as she's running she gets the feeling that Misaka 9982 felt like a real sister. She calls up Uiharu Kazari, asking about the confirmation question that Misaka 9982 asked when Mikoto first met.

At the same time, Misaka 9982 retrieves a guitar case from a public locker. She heads to an alley to meet Accelerator, telling him to move to the designated area as the experiment is beginning soon. Accelerator smiles.

Adapted To


By order of appearance:

New Characters


  • Electromaster - Misaka Mikoto (Level 5) and Misaka 9982 (either Level 2 or 3, not confirmed)

New Abilities

No new abilities were introduced in this chapter.


New Locations

No new locations were introduced in this chapter.



Cultural References

  • Misaka 9982 said goodbye (さようなら sayōnara?) to Misaka Mikoto. The word sayonara is used as a meaning of farewell than goodbye.

Unanswered Questions

  • Who is white-haired boy?


  • Ice Cream Old Man:  "If a married couple divorce, they become total strangers, but the bond between siblings lasts a lifetime." — to Mikoto and Misaka 9982.



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