All series / A Certain Magical Index / Arc 23
Arc 23 of 66 in A Certain Magical Index
Arc 23: Tree Diagram Remnant
In the story: 14–15 Sep
Arc name chosen by Arc Almanac, because the books don’t name it.
Index I stops before this arc.
Railgun stops before this arc.
Partly seen by the end of Index II.
Partly seen by the end of The Miracle of Endymion.
Railgun S stops before this arc.
Partly seen by the end of Index III.
Accelerator stops before this arc.
Earlier in story order than the end of Railgun T.
Item (episodes 1–2; airing) stops before this arc.
What happens
A stolen fragment of Tree Diagram brings Kuroko into conflict with another teleporter. Mikoto and the Sisters also have reasons to stop the theft, tying a Judgment investigation to the unresolved risks of Academy City's research.
Parts of this arc
- School Garden prologue
- The Remnant
Where it sits
| Format | Volumes | Units | Language |
|---|---|---|---|
| Light novel — A Certain Magical Index | Vol 8 | Prologue–epilogue | Japanese |
| Light novel — A Certain Magical Index | Vol 8 | Prologue–epilogue | English |
| Manga — A Certain Magical Index | Vol 11 | Chapters 58–65 | Japanese |
| Manga — A Certain Magical Index | Vol 11 | Chapters 58–65 | English |
| Anime — A Certain Magical Index | Index II | Season 2, episodes 6–7 | — |
Draft. Not yet checked against the books. Report a wrong mapping.