The best way to watch "A Certain Magical Index" (Toaru Majutsu no Index) series in order is by broadcast (release) order for a smooth introduction and complete understanding of the story. This includes the main seasons, movies, and spin-offs in the recommended sequence:
- A Certain Magical Index Season 1 (2008, 24 episodes)
- A Certain Magical Index II (2010, 24 episodes)
- A Certain Magical Index: The Movie – Endymion (2013)
- A Certain Magical Index III (2018, 26 episodes)
- A Certain Scientific Railgun Season 1 (2009, 24 episodes) – spin-off focusing on a different perspective
- A Certain Scientific Railgun OVA (2010, 1 episode)
- A Certain Scientific Railgun S (2013, 24 episodes)
- A Certain Scientific Railgun T (2020, 25 episodes)
- A Certain Scientific Accelerator (2019, 12 episodes)
- Optional: A Certain Dark Side Story – ITEM (TBA)
This order balances the main storyline with important spin-offs and the movie, allowing viewers to grasp the complex interconnected world efficiently.
Alternative watch orders, such as a more chronological or semi-chronological order, exist but are more complex and aimed at viewers familiar with the series. For beginners, the broadcast order is recommended to follow story progression naturally.
Summary
- Start with "A Certain Magical Index" Season 1, then continue with subsequent seasons and movie.
- Watch "A Certain Scientific Railgun" seasons and OVAs after the main Index series to explore side stories.
- End with "A Certain Scientific Accelerator" for additional depth.
- Optional new content can be added when available.
This way ensures the story unfolds in the intended narrative sequence, making it the best approach for first-time watchers.