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Arc Almanac

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

All series / A Certain Magical Index / Arc 22

Arc 22 of 66 in A Certain Magical Index

Arc 22: Orsola Aquinas Rescue

In the story: 8–9 Sep

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.

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.

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

Orsola's reported ability to decipher the Book of the Law draws rival religious groups into a pursuit. Touma and Index become involved in a rescue where the intentions of the people offering protection are difficult to separate from the threats.

Parts of this arc

  1. Prologue
  2. Rescue

Where it sits

Orsola Aquinas Rescue in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Magical IndexVol 7Prologue–epilogueJapanese
Light novel — A Certain Magical IndexVol 7Prologue–epilogueEnglish
Manga — A Certain Magical IndexVol 9, 10Chapters 45–57Japanese
Manga — A Certain Magical IndexVol 9, 10Chapters 45–57English
Anime — A Certain Magical IndexIndex IISeason 2, episodes 2–5—

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