Where the anime ends, and where the books carry onAnime, manga, light novels and web novels, lined up by story arc

Arc Almanac

21 Oct 2026Draft. Not yet checked against the books.

All series / A Certain Magical Index / Arc 11

Arc 11 of 66 in A Certain Magical Index

Arc 11: Poltergeist

In the story: Aug – 9 Aug

Arc name chosen by Arc Almanac, because the books don’t name it.

I’ve watched through

Earlier in story order than the end of Index I.

Seen by the end of Railgun.

Earlier in story order than the end of Index II.

Earlier in story order than the end of The Miracle of Endymion.

Seen by the end of Railgun S.

Earlier in story order than 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

Strange tremors disrupt Academy City while Mikoto's circle gets to know a new student. Their investigation brings them back to the unfinished consequences of the experiments surrounding the Level Upper incidents.

Where it sits

Poltergeist in A Certain Magical Index
FormatVolumesUnitsLanguage
Manga — A Certain Scientific Railgun—CutJapanese
Manga — A Certain Scientific Railgun—CutEnglish
Anime — A Certain Scientific RailgunRailgunSeason 1, episodes 17–24—

Draft. Not yet checked against the books. Report a wrong mapping.