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 2026Data version 2026-10-26

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A Certain Magical Index on your wiki

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Anime page: Where to continue after each anime part{{AdaptationGuide|franchise=toaru|view=after-season}}
Where to continue after each A Certain Magical Index anime part
Watched throughLight novel (Japanese)Light novel (English)Manga (Japanese)Manga (English)
Index ILight novel vol 7, prologue (out)Light novel vol 7, prologue (out)Manga vol 9, chapter 45 (out)Manga vol 9, chapter 45 (out)
RailgunIndex light novel vol 2, prologue (out)Index light novel vol 2, prologue (out)Manga vol 4, chapter 18 (out)Manga vol 4, chapter 18 (out)
Index IILight novel vol 14, prologue (out)Light novel vol 14, prologue (out)Manga vol 21, chapter 123 (out)Manga vol 21, chapter 123 (out)
The Miracle of EndymionLight novel vol 14, prologue (out)Light novel vol 14, prologue (out)Manga vol 21, chapter 123 (out)Manga vol 21, chapter 123 (out)
Railgun SIndex light novel vol 4, prologue (out)Index light novel vol 4, prologue (out)Starts partway through chapter 40. Manga vol 7 (out)Starts partway through chapter 40. Manga vol 7 (out)
Index IIINew Testament vol 1, prologue (out)New Testament vol 1, prologue (out)Manga hasn’t reached this point yetManga hasn’t reached this point yet
AcceleratorIndex light novel vol 7, prologue (out)Index light novel vol 7, prologue (out)Manga vol 8, chapter 38 (out)Manga vol 8, chapter 38 (out)
Railgun TIndex light novel vol 16, prologue (out)Index light novel vol 16, prologue (out)Manga vol 14, chapter 97 (out)Manga vol 14, chapter 97 (out)
Item (episodes 1–2; airing)Starts partway through chapter 1. Light novel vol 1 (out)No English editionStarts partway through chapter 3. Manga vol 1 (out)No English edition

Data: A Certain Magical Index adaptation guide (version 2026-10-26) by Arc Almanac contributors, licensed CC BY 4.0. Report a correction.

Series page: How far each work has been mapped{{AdaptationGuide|franchise=toaru|view=reach}}
A Certain Magical Index mapped reach by work
WorkFurthest mapped arcUnits in that arc
Light novel — A Certain Magical IndexArc 38Volume 20, prologue – volume 22, proclamation of armistice
Light novel — A Certain Magical Index SSSkill-Out UprisingPrologue–epilogue
Light novel — A Certain Magical Index: New TestamentKamijouPrologue–epilogue
Light novel — A Certain Magical Index: Genesis TestamentNarthexPrologue–epilogue
Light novel — A Certain Dark ItemBlackmailerPrologue–epilogue
Manga — A Certain Magical IndexArc 38Chapters 212–220 (partial)
Manga — A Certain Scientific RailgunJailbreakerChapters 98–130
Manga — A Certain Scientific AcceleratorNectarChapters 37–63
Manga — A Certain Scientific Railgun: Astral BuddyAstral BuddyChapters 1–30
Manga — A Certain Scientific Dark MatterYuzuriha RingoChapters 1–4
Manga — A Certain Scientific Mental OutTokiwadai ElectionChapters 1–37
Manga — A Certain Dark ItemEnemy ItemChapters 1–18 (partial)
Manga — A Certain Magical Index: The Miracle of EndymionMiracle of EndymionChapters 1–9
Anime — A Certain Magical IndexArc 38Season 3, episodes 18–26
Anime — A Certain Scientific RailgunDream RankerSeason 3, episodes 16–25 (partial)
Anime — A Certain Scientific AcceleratorNectarSeason 1, episode 12 (partial)
Anime — A Certain Dark ItemEnemy ItemSeason 1, episode 2 (partial)

Data: A Certain Magical Index adaptation guide (version 2026-10-26) by Arc Almanac contributors, licensed CC BY 4.0. Report a correction.

Arc list: Every arc and its mapped units{{AdaptationGuide|franchise=toaru|view=arcs}}
A Certain Magical Index arcs
#ArcA Certain Magical IndexA Certain Magical Index SSA Certain Magical Index: New TestamentA Certain Magical Index: Genesis TestamentA Certain Dark ItemA Certain Magical IndexA Certain Scientific RailgunA Certain Scientific AcceleratorA Certain Scientific Railgun: Astral BuddyA Certain Scientific Dark MatterA Certain Scientific Mental OutA Certain Dark ItemA Certain Magical Index: The Miracle of EndymionA Certain Magical IndexA Certain Scientific RailgunA Certain Scientific AcceleratorA Certain Dark Item
1Railgun Past——————Chapters 131–162.5——————————
2Enemy Item————Prologue–epilogue——————Chapters 1–18————Season 1, episode 2
3Honey Queen————Prologue–epilogue————————————
4Arc 4————Prologue–epilogue————————————
5Arc 5————Prologue–epilogue————————————
6Daihasei Festival (previous year)————Prologue–epilogue————————————
7Blackmailer————Prologue–epilogue————————————
8Level Upper——————Chapters 1–17———————Season 1, episodes 1–12——
9IndexPrologue–epilogue————Chapters 1–10———————Season 1, episodes 1–6———
10Big Spider——————Cut———————Season 1, episodes 15–16——
11Poltergeist——————Cut———————Season 1, episodes 17–24——
12Deep BloodPrologue–epilogue————Cut———————Season 1, episodes 7–9———
13SistersPrologue–epilogue————Chapters 11–21Chapters 18–39——————Season 1, episodes 10–14Season 2, episodes 2–16——
14Silent Party——————Cut———————Season 2, episodes 18–24——
15Railgun intermission——————Extra 39 special–chapter 42———————Season 2, episodes 16–17——
16Angel FallPrologue–epilogue————Cut———————Season 1, episodes 15–17———
17Three StoriesPrologue–epilogue————Chapters 22–33———————Season 1, episodes 18–20———
18Kazakiri HyoukaPrologue–epilogue————Chapters 34–44———————Season 1, episodes 21–24———
19Necromancer———————Chapters 1–36———————Season 1, episodes 2–12—
20Yuzuriha Ringo—————————Chapters 1–4———————
21Nectar———————Chapters 37–63———————Season 1, episode 12—
22Orsola Aquinas RescuePrologue–epilogue————Chapters 45–57———————Season 2, episodes 2–5———
23Tree Diagram RemnantPrologue–epilogue————Chapters 58–65———————Season 2, episodes 6–7———
24Miracle of EndymionCut————Cut——————Chapters 1–9Episode 1———
25Daihasei FestivalVolume 9, prologue – volume 10, epilogue————Chapters 66–85Chapters 43–70——————Season 2, episodes 8–13Season 3, episodes 1–15——
26La Regina del Mare AdriaticoPrologue–epilogue————Chapters 86–96———————Season 2, episodes 14–16———
27Arc 27Volume 12, prologue – volume 13, epilogue————Chapters 97–116———————Season 2, episodes 17–22———
28Skill-Out UprisingCutPrologue–epilogue———Chapters 116–122———————Season 2, episodes 23–24———
29Document of ConstantinePrologue–epilogue————Chapters 123–132———————Season 3, episodes 1–3———
30Arc 30Prologue–epilogue————Chapters 133–149———————Season 3, episodes 4–6———
31Dream Ranker——————Chapters 71–97———————Season 3, episodes 16–25——
32Astral Buddy————————Chapters 1–30————————
33Tokiwadai Election——————————Chapters 1–37——————
34Acqua of the BackPrologue–epilogue————Chapters 150–164———————Season 3, episodes 7–9———
35Jailbreaker——————Chapters 98–130——————————
36Arc 36Volume 17, chapter 1 – volume 18, epilogue————Chapters 165–196———————Season 3, episodes 10–14———
37Arc 37Prologue–epilogue————Chapters 197–211———————Season 3, episodes 15–17———
38Arc 38Volume 20, prologue – volume 22, proclamation of armistice————Chapters 212–220———————Season 3, episodes 18–26———
39Freshmen——Prologue–epilogue——————————————
40Homecoming——Prologue–epilogue——————————————
41Arc 41——Prologue–epilogue——————————————
42Baggage City——Main–profound destruction——————————————
43Ichihanaran Festival——Volume 5, prologue – volume 6, epilogue——————————————
44Agitate Halation——Prologue–epilogue——————————————
45Magic God Othinus——Volume 8, prologue – volume 10, epilogue——————————————
46Mental Out——Prologue–epilogue——————————————
47St. Germain——Prologue–epilogue——————————————
48Arc 48——Prologue–epilogue——————————————
49World Rejecter——Prologue–epilogue——————————————
50Salome——Prologue–epilogue——————————————
51Element——Prologue–epilogue——————————————
52Arc 52——Prologue–epilogue——————————————
53Arc 53——Prologue–epilogue——————————————
54Processor Suit——Prologue–epilogue——————————————
55Arc 55——Volume 20, prologue – volume 22, epilogue——————————————
56Kamijou——Prologue–epilogue——————————————
57Christmas Eve———Prologue–epilogue—————————————
58Christmas Day———Prologue–epilogue—————————————
59Operation Handcuffs———Prologue–epilogue—————————————
60Los Angeles———Prologue–epilogue—————————————
61Post-Handcuffs———Prologue–epilogue—————————————
62New Year’s Eve———Prologue–epilogue—————————————
63New Year———Volume 7, prologue – volume 10, epilogue—————————————
64Arc 64———Prologue–epilogue—————————————
65Arc 65———Volume 12, prologue – volume 14, epilogue—————————————
66Narthex———Prologue–epilogue—————————————

Data: A Certain Magical Index adaptation guide (version 2026-10-26) by Arc Almanac contributors, licensed CC BY 4.0. Report a correction.

Individual arc page: One arc across works and editions{{AdaptationGuide|franchise=toaru|view=arc|arc=railgun-past}}
Railgun Past in A Certain Magical Index
FormatVolumesUnitsLanguage
Manga — A Certain Scientific RailgunVol 17, 18, 19, 20Chapters 131–162.5Japanese
Manga — A Certain Scientific RailgunVol 17, 18, 19, 20Chapters 131–162.5English

Data: A Certain Magical Index adaptation guide (version 2026-10-26) by Arc Almanac contributors, licensed CC BY 4.0. Report a correction.

Install

The current bundle is version 2026-10-26. The version is the date of the last change to this series' data.

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What changed since each earlier version

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  1. 26 Oct 2026 (current)

    • Add Toaru key art now that AniList is back
  2. 21 Oct 2026

    • WIP: phase 3 fixes (interrupted by Codex usage limit, unverified)
    • Verify Toaru page copy and API compatibility; record remaining source gates
    • Add Toaru arc summaries, verified purchase links and Item chapter coverage
    • Settle Index I broadcast dates and restore the README queue entry
    • Fix Toaru phase 2 mappings after Fable review
    • WIP: phase 2 fixes (interrupted by Codex usage limit, unverified)
    • Record Toaru verification ledger, source gates and passing checks
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