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Arc Almanac

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

All series / A Certain Magical Index / Arc 6

Arc 6 of 66 in A Certain Magical Index

Arc 6: Daihasei Festival (previous year)

In the story: 17–20 Sep, the year before

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.

Earlier in story order than 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.

Earlier in story order than the end of Railgun S.

Earlier in story order than 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 previous year's sports festival fills Academy City with visitors, but Item still has work to do. An investigation into the death of an anti-doping inspector pulls the team away from the festivities, with Takitsubo unusually invested in the assignment.

Where it sits

Daihasei Festival (previous year) in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Dark ItemVol 5Prologue–epilogueJapanese

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