A Certain Magical Index is one of the most ambitious science-fantasy anime series to emerge from Japan’s modern light-novel scene. Known in Japan as Toaru Majutsu no Index (とある魔術の禁書目録), the series combines supernatural abilities, magic, science fiction, school-life elements and large-scale conflicts into a single interconnected world.
The anime follows Touma Kamijou, an ordinary Academy City student whose right hand possesses an extraordinary ability known as Imagine Breaker. His life changes when he encounters Index, a mysterious young nun who has memorized thousands of magical grimoires and is being pursued by dangerous magicians.
Produced by J.C.STAFF and directed by Hiroshi Nishikiori, the television adaptation began in 2008 and eventually received three seasons. The franchise also expanded into films, manga, spin-off anime and other media, most notably A Certain Scientific Railgun and A Certain Scientific Accelerator.
Overview of A Certain Magical Index
A Certain Magical Index is a Japanese action, fantasy and science-fiction anime based primarily on the light-novel series written by Kazuma Kamachi and illustrated by Kiyotaka Haimura.
The original light novel began publication under ASCII Media Works’ Dengeki Bunko imprint on April 10, 2004. The original series concluded with its 22nd main volume in October 2010, while later sequel series expanded the story far beyond the original novels.
The anime’s first season premiered in Japan in October 2008, followed by A Certain Magical Index II in 2010 and A Certain Magical Index III in 2018. All three television seasons were animated by J.C.STAFF, with Hiroshi Nishikiori directing the series.
Quick Facts
| Detail | Information |
|---|---|
| Japanese title | とある魔術の禁書目録 |
| Romanized title | Toaru Majutsu no Index |
| English title | A Certain Magical Index |
| Country of origin | Japan |
| Original creator | Kazuma Kamachi |
| Original illustrator | Kiyotaka Haimura |
| Source material | Light novel |
| Animation studio | J.C.STAFF |
| Director | Hiroshi Nishikiori |
| Music | Maiko Iuchi |
| Original genre | Action, fantasy, science fiction |
| First anime season | 2008 |
| Television seasons | 3 |
| Total TV episodes | 74 |
| Main Japanese protagonist voice | Atsushi Abe |
| Main heroine’s Japanese voice | Yuka Iguchi |
The three television seasons contain 24 episodes, 24 episodes and 26 episodes respectively, for a total of 74 episodes.
Story and Premise
The story takes place primarily in Academy City, a technologically advanced city where students are trained to develop supernatural abilities known as psychic powers or esper abilities.
At the centre of this world is Touma Kamijou, a student classified as a Level 0 because he appears to possess no measurable esper ability. His apparent weakness hides a remarkable power in his right hand: Imagine Breaker.
Imagine Breaker can nullify supernatural phenomena, making Touma an unusual opponent for both espers and magicians. However, his ability does not make him an all-powerful hero. Touma remains physically vulnerable, and his tendency to become involved in other people’s problems repeatedly puts him in dangerous situations.
His circumstances change dramatically after he meets Index, a young nun connected to the magical side of the world. Index possesses an extraordinary memory and has knowledge of thousands of magical texts. Her arrival brings Touma into direct contact with a hidden supernatural society operating alongside Academy City’s scientific world.
One of the defining features of the series is the contrast between science and magic. Academy City represents the scientific side, while churches, magicians and magical organizations represent another major power structure. As the story develops, these two worlds increasingly collide.
Rather than keeping supernatural abilities and magic completely separate, A Certain Magical Index gradually reveals how complicated their relationship can become. This expanding mythology is a major reason the franchise developed such a large cast and extensive interconnected storyline.
Main Characters
Touma Kamijou
Touma Kamijou is the central protagonist of A Certain Magical Index. Although he is officially considered a Level 0 student, his right hand contains Imagine Breaker, an ability capable of cancelling supernatural powers.
Touma is defined as much by his personality as by his ability. He frequently risks himself to protect people he barely knows and often becomes involved in conflicts because he refuses to ignore someone in danger.
His unlucky nature also provides much of the series’ comedy, while his determination drives many of its dramatic confrontations.
Index
Index is the young nun whose arrival changes Touma’s life. She belongs to the magical side of the setting and possesses an enormous amount of stored magical knowledge.
Her cheerful and sometimes mischievous personality contrasts with the dangerous circumstances surrounding her. Index also becomes one of the most recognizable characters associated with the franchise.
Mikoto Misaka
Mikoto Misaka is one of Academy City’s most powerful espers and is classified as a Level 5. Her electromagnetic abilities make her an important figure in the Academy City storyline.
Mikoto’s popularity became especially significant because she later became the lead character of the spin-off series A Certain Scientific Railgun. Her connection to Touma also makes her one of the most important recurring characters in the wider Toaru universe.
Accelerator
Accelerator is introduced as an exceptionally powerful esper and is regarded as Academy City’s strongest Level 5 esper.
His ability to manipulate vectors makes him one of the most formidable characters in the franchise. Over time, Accelerator’s role becomes considerably more complicated, and he eventually receives his own spin-off anime, A Certain Scientific Accelerator.
Shiage Hamazura
Shiage Hamazura represents another perspective within the Academy City side of the story. Unlike Touma and Accelerator, his circumstances provide a different look at people caught up in the city’s conflicts without possessing the same level of extraordinary power.
His increasing importance becomes particularly noticeable in the later portion of the anime storyline.
Voice Cast
The Japanese voice cast features several performers who became closely associated with the Toaru franchise.
- Atsushi Abe as Touma Kamijou
- Yuka Iguchi as Index
- Rina Satō as Mikoto Misaka
- Nobuhiko Okamoto as Accelerator
- Satoshi Hino as Shiage Hamazura
The official A Certain Magical Index III staff and cast page confirms these principal Japanese cast members and credits J.C.STAFF as the animation studio.
The English-language version has also helped the franchise reach international anime audiences. English licensing and distribution have changed over the years as Funimation’s anime business was incorporated into Crunchyroll, making availability dependent on territory and platform.
Animation Studio and Production
J.C.STAFF
The anime was produced by J.C.STAFF, the Japanese animation studio responsible for all three television seasons.
The first two seasons were directed by Hiroshi Nishikiori, who also returned for the third season. The third season’s series composition was handled by Hiroyuki Yoshino, while character design was credited to Yuichi Tanaka. Music for the third season was composed by Maiko Iuchi.
The production’s visual identity combines conventional school and city environments with supernatural battles, magical effects and large-scale action sequences.
The adaptation also benefits from the franchise’s distinctive character designs, originally created for the light novels by Kiyotaka Haimura. J.C.STAFF translated those designs into an animated format while maintaining a recognizable visual connection to the source material.
Seasons and Episodes
The television anime currently consists of three seasons and 74 episodes.
Season 1 — A Certain Magical Index
The first season aired in Japan from October 2008 to March 2009 and contains 24 episodes. It establishes Academy City, Touma, Index and the fundamental conflict between the scientific and magical worlds.
Season 2 — A Certain Magical Index II
The second season, commonly known as A Certain Magical Index II, began broadcasting in October 2010 and concluded in April 2011. It also contains 24 episodes.
The season broadens the world considerably, introducing additional magical organizations, espers and conflicts while expanding the roles of several recurring characters.
Season 3 — A Certain Magical Index III
A Certain Magical Index III premiered on October 5, 2018, and concluded on April 5, 2019. It contains 26 episodes.
The third season moves into some of the franchise’s larger conflicts and brings together storylines involving Touma, Accelerator, Hamazura and various organizations from the science and magic sides.
Release History
The original A Certain Magical Index television series debuted in 2008, several years after the light novels began publication.
The second season followed two years later in 2010, but fans then waited several years for the third television season. Production of A Certain Magical Index III was officially announced in 2017, with the series eventually beginning its Japanese broadcast in October 2018.
The franchise also expanded beyond the main television series. One of the most important additions was A Certain Magical Index: The Movie – The Miracle of Endymion, an original-story animated film released in Japan in February 2013. The wider universe also includes the highly successful A Certain Scientific Railgun spin-off and A Certain Scientific Accelerator.
This means that viewers interested in the franchise have considerably more material available than the 74 main-series television episodes alone.
Reception and Popularity
A Certain Magical Index developed a substantial international following through its combination of supernatural action, science-fiction world-building and interconnected characters.
The franchise’s popularity is particularly notable because its story world extends across multiple anime series and other forms of media. Characters such as Mikoto Misaka and Accelerator became prominent enough to support their own spin-off projects, giving the broader Toaru universe a much larger presence than the original television series alone.
The anime’s reception has varied from season to season. The third season in particular has attracted discussion among fans because it attempts to cover a considerable amount of light-novel material within 26 episodes. Even so, the season remains an important part of the main animated storyline.
The underlying light-novel franchise has also remained active through its successor series, including New Testament and Genesis Testament, demonstrating the continuing scale of the world created by Kazuma Kamachi.
Why A Certain Magical Index Remains Popular
One of the biggest strengths of A Certain Magical Index is its unusual combination of genres. It can move from school comedy to supernatural action, science-fiction concepts and large-scale fantasy conflicts without being limited to a single style.
Its world-building is another major attraction. Academy City provides a scientific setting built around espers and technological research, while the magical side introduces churches, grimoires, magicians and supernatural traditions. The two systems create a setting that feels substantially larger than a conventional school-based anime.
The franchise also benefits from its interconnected cast. Touma may be the main protagonist of Index, but characters such as Mikoto, Accelerator and Hamazura have their own stories and perspectives.
For new viewers, however, the size of the universe can initially seem intimidating. The best way to understand the main series is to begin with the first season and follow the television series in release order before exploring the related spin-offs.
A Certain Magical Index Without Major Spoilers
Without revealing major developments, the central conflict of A Certain Magical Index revolves around the increasingly complicated relationship between science and magic.
Touma repeatedly finds himself at the point where these worlds intersect. What begins as a relatively personal encounter with Index gradually expands into conflicts involving powerful organizations, advanced espers and international magical forces.
The scale therefore grows considerably over time. The early episodes introduce the basic rules of the setting, while later storylines reveal how many different groups have interests in Academy City and the supernatural world.
Conclusion
A Certain Magical Index remains an important title in modern Japanese science-fantasy anime. Beginning in 2008, its television adaptation grew into three seasons and 74 episodes, while the larger franchise expanded through films, manga, games and several spin-off anime series.
At its heart is Touma Kamijou, a seemingly ordinary Level 0 student whose Imagine Breaker places him at the centre of conflicts between science and magic. Around him are characters such as Index, Mikoto Misaka, Accelerator and Shiage Hamazura, each contributing another perspective to the franchise’s expansive world.
For viewers who enjoy supernatural battles, detailed fictional systems, interconnected characters and long-running anime universes, A Certain Magical Index offers a particularly distinctive experience.
Frequently Asked Questions
Is A Certain Magical Index finished?
The main television adaptation has finished its currently released third season, A Certain Magical Index III, which concluded in April 2019. The wider Toaru franchise, however, continues through other anime projects and light-novel series.
How many episodes does A Certain Magical Index have?
The three main television seasons contain 74 episodes in total: 24 episodes in Season 1, 24 in Season 2 and 26 in Season 3.
What should I watch after A Certain Magical Index?
Viewers can explore the related A Certain Scientific Railgun and A Certain Scientific Accelerator anime series. These spin-offs focus on different characters and provide additional perspectives on the same broader universe.
