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Arc Almanac

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

All series / A Certain Magical Index / Arc 45

Arc 45 of 66 in A Certain Magical Index

Arc 45: Magic God Othinus

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

Gremlin approaches the completion of the weapon at the heart of Othinus's plans. Touma and the forces opposing her face a confrontation that tests both their ability to stop a Magic God and the reasons they have for fighting.

Where it sits

Magic God Othinus in A Certain Magical Index
FormatVolumesUnitsLanguage
Light novel — A Certain Magical Index: New TestamentVol 8, 9, 10Volume 8, prologue – volume 10, epilogueJapanese
Light novel — A Certain Magical Index: New Testament—Volume 8, prologue – volume 10, epilogueEnglish

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