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Arc Almanac

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

All series / A Certain Magical Index / Arc 57

Arc 57 of 66 in A Certain Magical Index

Arc 57: Christmas Eve

In the story: 24 Dec

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

Touma tries to enjoy Christmas Eve with Index and Mikoto after his school plans fall through. Meanwhile, Accelerator prepares an operation against Academy City's underground, and another magical threat begins moving into the city.

Where it sits

Christmas Eve in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Magical Index: Genesis TestamentVol 1Prologue–epilogueJapanese

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