All series / A Certain Magical Index / Arc 17
Arc 17 of 66 in A Certain Magical Index
Arc 17: Three Stories
In the story: 31 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.
Seen by the end of Index II.
Seen by the end of The Miracle of Endymion.
Railgun S stops before this arc.
Seen by the end of Index III.
Earlier in story order than the end of Accelerator.
Earlier in story order than the end of Railgun T.
Item (episodes 1–2; airing) stops before this arc.
What happens
The last day of summer follows several separate problems across Academy City. Touma faces trouble involving magicians, while Accelerator's meeting with Last Order forces him to confront what follows the Sisters experiment.
Parts of this arc
- Night of opening (Touma and Index)
- Accelerator meets Last Order
- Mikoto's fake date
- Last Order's final signal
- Yamisaka Ouma (Touma and Index)
- Night of ending (Accelerator)
Where it sits
| Format | Volumes | Units | Language |
|---|---|---|---|
| Light novel — A Certain Magical Index | Vol 5 | Prologue–epilogue | Japanese |
| Light novel — A Certain Magical Index | Vol 5 | Prologue–epilogue | English |
| Manga — A Certain Magical Index | Vol 5, 6 | Chapters 22–33 | Japanese |
| Manga — A Certain Magical Index | Vol 5, 6 | Chapters 22–33 | English |
| Anime — A Certain Magical Index | Index I | Season 1, episodes 18–20 | — |
Draft. Not yet checked against the books. Report a wrong mapping.