Where the anime ends, and where the books carry onAnime, manga, light novels and web novels, lined up by story arc

Arc Almanac

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

All series / A Certain Magical Index / Arc 47

Arc 47 of 66 in A Certain Magical Index

Arc 47: St. Germain

In the story: 1 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

A visit to the Dianoid turns into a siege when St. Germain isolates the building. Touma, his companions, and other trapped visitors must navigate the threat while several personal searches bring them into the same confined space.

Where it sits

St. Germain in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Magical Index: New TestamentVol 12Prologue–epilogueJapanese
Light novel — A Certain Magical Index: New Testament—Prologue–epilogueEnglish

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