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Arc Almanac

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

All series / A Certain Magical Index / Arc 44

Arc 44 of 66 in A Certain Magical Index

Arc 44: Agitate Halation

In the story: Nov

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

I’ve watched through

Index I stops before this arc.

Railgun stops before this arc.

Index II stops before this arc.

The Miracle of Endymion stops before this arc.

Railgun S stops before this arc.

Index III stops before this arc.

Accelerator stops before this arc.

Railgun T stops before this arc.

Item (episodes 1–2; airing) stops before this arc.

What happens

A project built around the behavior of heroes puts Fremea at the center of a citywide scheme. Several people who would normally respond to danger independently are drawn toward the same crisis, with their instincts becoming part of the problem.

Where it sits

Agitate Halation in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Magical Index: New TestamentVol 7Prologue–epilogueJapanese
Light novel — A Certain Magical Index: New Testament—Prologue–epilogueEnglish

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