All series / A Certain Magical Index / Arc 13
Arc 13 of 66 in A Certain Magical Index
Arc 13: Sisters
In the story: 10–22 Aug
Arc name chosen by Arc Almanac, because the books don’t name it.
Partly seen by the end of Index I.
Railgun stops before this arc.
Partly seen by the end of Index II.
Partly seen by the end of The Miracle of Endymion.
Seen by the end of Railgun S.
Partly seen by the end of Index III.
Earlier in story order than the end of Accelerator.
Seen by the end of Railgun T.
Item (episodes 1–2; airing) stops before this arc.
What happens
Mikoto investigates the people and facilities connected to the Sisters. Her efforts intersect with Touma's encounter with a girl who looks just like her, bringing both stories into a confrontation with the experiment surrounding Accelerator.
Parts of this arc
- Mikoto’s investigation
- Touma and the Sisters
Where it sits
| Format | Volumes | Units | Language |
|---|---|---|---|
| Light novel — A Certain Magical Index | Vol 3 | Prologue–epilogue | Japanese |
| Light novel — A Certain Magical Index | Vol 3 | Prologue–epilogue | English |
| Manga — A Certain Magical Index | Vol 3, 4 | Chapters 11–21 | Japanese |
| Manga — A Certain Magical Index | Vol 3, 4 | Chapters 11–21 | English |
| Manga — A Certain Scientific Railgun | Vol 4, 5, 6, 7 | Chapters 18–39 | Japanese |
| Manga — A Certain Scientific Railgun | Vol 4, 5, 6, 7 | Chapters 18–39 | English |
| Anime — A Certain Magical Index | Index I | Season 1, episodes 10–14 | — |
| Anime — A Certain Scientific Railgun | Railgun S | Season 2, episodes 2–16 | — |
Draft. Not yet checked against the books. Report a wrong mapping.