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A Certain Magical Index Watch Order
The Toaru universe spans nine released anime entries across three series (A Certain Magical Index, A Certain Scientific Railgun, Accelerator) plus one film, with the spinoff Toaru Anbu no ITEM arriving October 9, 2026. Watch in release order; it preserves every reveal.
A Certain Magical Index Watch Order: complete list
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Why this order?
Release order is the answer, and it is the one order that keeps every reveal intact: Index (2008), Railgun (2009), Index II (2010), the Endymion movie (2013), Railgun S (2013), Index III (2018), Accelerator (2019), Railgun T (2020). The magic side and the science side of Academy City run on the same clock, and the shows were written assuming you are watching them as they aired: Railgun S retells the Sisters arc from Index season one through Misaka's eyes, and it devastates in a way it simply cannot if you meet it first; Index II and III assume you know the Railgun cast and the movie.
Chronological order is a popular question and a bad first watch: multiple arcs run simultaneously across different series, so a strict timeline pass has you hopping between shows mid-arc. Save it for a rewatch. The one defensible alternative entry is Railgun first (Railgun, Railgun S, Railgun T) for viewers who prefer Misaka's science-side story; it stands up surprisingly well alone, but cross into Index before Railgun T to keep its cameos loaded.
A warning and a date. The warning: Index III compresses a huge stretch of novels and is famously rushed; it is still required viewing for the plot, just know the pacing is the adaptation's fault, not yours. The date: Toaru Anbu no ITEM premieres October 9, 2026, a dark-side spinoff about Mugino's ITEM crew with Railgun's director at J.C. Staff, and a fourth Railgun season is officially in the works behind it, still undated. Watch Railgun S and T before ITEM; that is where the crew earns its fandom.
How many episodes is A Certain Magical Index?
A Certain Magical Index has 159 episodes across the 7 series entries tracked in this guide. 15 of them are marked filler, leaving 144 canon episodes.
See how A Certain Magical Index compares on the Anime Filler Index →
- A Certain Magical Index 24 episodes 2008-2009
- A Certain Scientific Railgun 24 episodes 2009-2010
- A Certain Magical Index II 24 episodes 2010-2011
- A Certain Scientific Railgun S 24 episodes 2013
- A Certain Magical Index III 26 episodes 2018-2019
- A Certain Scientific Accelerator 12 episodes 2019
- A Certain Scientific Railgun T 25 episodes 2020
Timeline 2008-2026
Every entry by release year: rows that share a year are a cluster, and the long droughts are called out on the rail.
- 2008 A Certain Magical Index
- 2009 A Certain Scientific Railgun
- 2010 II
- 2013 The Miracle of EndymionA Certain Scientific Railgun S
- 5-year gap
- 2018 III
- 2019 A Certain Scientific Accelerator
- 2020 A Certain Scientific Railgun T
- 6-year gap
- 2026 Toaru Anbu no ITEM
Where to play it today
- All three series and the movie stream on Crunchyroll in most regions
- Toaru Anbu no ITEM is expected to simulcast from October 9, 2026; check your local lineup closer to the date
Availability changes often and varies by region - links search each platform for A Certain Magical Index.
Frequently asked questions
How many Toaru anime are there?
Nine released entries: three seasons of A Certain Magical Index plus its Endymion movie, three seasons of A Certain Scientific Railgun, and A Certain Scientific Accelerator. The tenth, the spinoff Toaru Anbu no ITEM, premieres October 9, 2026, with a fourth Railgun season officially in the works.
What order should I watch A Certain Magical Index and Railgun in?
Release order: Index, Railgun, Index II, the Endymion movie, Railgun S, Index III, Accelerator, Railgun T. It is how the shows were written to be met, and it protects the Sisters arc reveal.
Can I start with Railgun instead of Index?
Yes, it is the one defensible alternative: Railgun, Railgun S and Railgun T follow Misaka's science-side story and stand up well alone. Cross into Index before Railgun T, though, or its cameos and stakes lose their weight.
Should I watch Toaru in chronological order?
Not on a first watch: several arcs run simultaneously across different series, so a strict timeline pass hops between shows mid-story. Chronological is a rewarding rewatch project after release order.
Do I need Railgun before Toaru Anbu no ITEM?
Strongly recommended: ITEM stars Mugino, Frenda, Takitsubo and Kinuhata, whose reputations are built across Railgun S and Railgun T. The spinoff covers the crew's earlier days on Academy City's dark side.
Is Index season 4 announced?
No. As of mid-2026 the announced projects are Toaru Anbu no ITEM (October 9, 2026) and a fourth Railgun season, which is officially in production without a date. Index IV remains rumor only.
How many episodes is A Certain Magical Index?
A Certain Magical Index has 159 episodes across the 7 series entries tracked in this guide. 15 of them are marked filler, leaving 144 canon episodes.
How many A Certain Magical Index episodes are filler?
Of the 159 episodes tracked in this guide, 15 are marked filler, and the tracker above marks every one so you can skip straight past them.
When is Toaru Anbu no ITEM coming out?
Toaru Anbu no ITEM is dated October 9, 2026. Dark-side spinoff on Mugino's ITEM crew; Railgun's director at J.C. Staff.
Last verified · Sources: en.wikipedia.org, animenewsnetwork.com, Wikidata
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