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Arc Almanac

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

All series / A Certain Magical Index / Arc 38

Arc 38 of 66 in A Certain Magical Index

Arc 38: World War III

In the story: 19–30 Oct

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.

Seen by the end of Index III.

Accelerator stops before this arc.

Railgun T stops before this arc.

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

What happens

The conflict between Academy City and its magical opponents expands into war. Touma, Accelerator, and Hamazura travel through Russia with different people to save, while Fiamma's plans draw their battles toward the same international crisis.

Parts of this arc

  1. Volume 20: Russia
  2. Volume 21: The Star
  3. Volume 22: Arctic conclusion

Where it sits

Arc 38 in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Magical IndexVol 20, 21, 22Volume 20, prologue – volume 22, proclamation of armisticeJapanese
Light novel — A Certain Magical IndexVol 20, 21, 22Volume 20, prologue – volume 22, proclamation of armisticeEnglish
Manga — A Certain Magical IndexVol 34Chapters 212–220Japanese
Manga — A Certain Magical Index—Chapters 212–220English
Anime — A Certain Magical IndexIndex IIISeason 3, episodes 18–26—

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