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Quick Answer
- A Certain Magical Index(TV · 24 eps)
- A Certain Scientific Railgun(TV · 24 eps)
- A Certain Magical Index II(TV · 24 eps)
- A Certain Scientific Railgun S(TV · 24 eps)
- A Certain Magical Index III(TV · 26 eps)
- A Certain Scientific Accelerator(TV · 12 eps)
- A Certain Scientific Railgun T(TV · 25 eps)
- ...and 12 more below
Total: ~175 episodes / 70h watch time
A Certain Magical Index Watch Order(2026)
A Certain Magical Index's watch order is straightforward once you see it laid out. 8 main series, 1 movie, and 10 OVA/specials — all in the right sequence.
19 entries ~70h total8 series1 movie10 OVA/specials
Full Watch Order (Release Order)
2
3
4
5
6
7
8
9
A Certain Magical Index the Movie: The Miracle of Endymion
7.41Movie1 eps~24minJ.C.Staff
Finished Airing10
11
12
13
14
15
16
A Certain Scientific Accelerator: Sally Forth, Mr. Accel! A Madcap Onslaught
6.53Special1 eps~24minJ.C.Staff
Finished Airing17
A Certain Scientific Railgun OVA: Since Misaka-san is the Center of Attention Right Now...
7.44OVA1 eps~24minJ.C.Staff
Finished Airing18
A Certain Scientific Railgun: Being a Photo Shoot Model Under the Blazing Sun Isn't Easy, Is It?
6.78OVA1 eps~24minJ.C.Staff
Finished Airing19
A Certain Scientific Railgun S: All the Important Things I Learned in a Bathhouse
6.80OVA1 eps~24minJ.C.Staff
Finished AiringTips for First-Timers
What you can skip
The movie and some comedic shorts are optional
Common mistake
Starting with Index III or Accelerator without the earlier seasons
Short on time?
Watch Railgun → Railgun S → Index S1-2 — add Index III only if you're still invested
Frequently Asked Questions
What's the best order to watch A Certain Magical Index?
Release order. Start with A Certain Magical Index and go down the list. This is how the creators intended the story to unfold — later entries build on what came before, and watching out of order can spoil key reveals.
How long does it take to watch all of A Certain Magical Index?
About 70 hours total across 175 episodes and 19 entries. At 3-4 episodes per day, that's roughly 50 days.
Can I skip the movies and OVAs?
It depends. Recap movies are always safe to skip — they just compress the TV episodes. Original movies and OVAs range from "fun side stories" to "actually important for the plot." When you're unsure, just watch them where they fall in the list above. Better to have extra context than miss something.
Release order or chronological order?
Go with release order for your first time through. Chronological can be tempting, but shows are written with release order in mind — reveals hit harder and character arcs make more sense. Save chronological for a rewatch if you want a different perspective.
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