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Story Arcs

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List of Story Arcs and their corresponding summaries, for both the Toaru Majutsu no Index main storyline and Toaru Kagaku no Railgun side story. This summary does not include the story timeline.

The list also includes the number of light novel volumes, manga chapters, anime episodes and specials the story arc has.

Toaru Majutsu no Index Story ArcsEdit

Index ArcEdit

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The Index Arc is the first major story arc introduced in the Toaru Majutsu no Index series. The arc introduces Kamijou Touma, a young man with the mysterious power of the Imagine Breaker, who meets a mysterious nun by the name of Index which pulls him into the mysterious world of magic. This arc occurs near the end of the Level Upper Arc in the Toaru Kagaku no Railgun sidestory.

Deep Blood ArcEdit

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The Deep Blood Arc is a story arc that occurs in the Toaru Majutsu no Index storyline. It introduces Himegami Aisa and her ability "Deep Blood", which is central to the plans of Aureolus Izzard, a powerful alchemist and former partner of Index.

Sisters ArcEdit

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The Sisters Arc is a major story arc in the Toaru Majutsu no Index universe. Originally only lasting a single volume in the light novels, it is later expanded greatly in the Toaru Kagaku no Railgun manga.

The arc focuses on the ordeals of Misaka Mikoto after discovering the existence of Misaka clones that are being used in the Level 6 Shift, an experiment where they are killed as so Accelerator can achieve Level 6.

Angel Fall ArcEdit

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Angel Fall Arc is a story arc that occurs in the Toaru Majutsu no Index storyline. It concerns with the activation of a world-wide spell known as Angel Fall, a spell that switches the elements, as well as the appearances of persons around the world. The most notable affect of Angel Fall is the expulsion of an angel to earth.

Three Stories ArcEdit

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The Three Stories Arc is a story arc that occurs in the Toaru Majutsu no Index storyline. The arc focus on three separate event that happen on August 31; two stories focuses on Touma dealing with magicians while the other focuses on Accelerator dealing with the aftermath of the Level 6 Shift, which would mark the first time Accelerator is featured as a protagonist to the science side.

Kazakiri Hyouka ArcEdit

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The Kazakiri Hyouka Arc is a story arc in the Toaru Majutsu no Index storyline. It primarily focuses on Kazakiri Hyouka, a physical manifestation of all espers AIM dispersion fields in Academy City and the key of the Imaginary Number District.

Orsola Aquinas Rescue ArcEdit

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The Orsola Aquinas Rescue Arc is a major story arc in Toaru Majutsu no Index storyline. It focuses on the rescue of the title character of the arc, Orsola Aquinas, a member of the Roman Catholic Church who has found a way to decipher the mysterious Book of the Law, a grimoire that is said to hold great power. The arc marks the first time Touma battle against the Roman Catholic Church, as well as the first as the first time two different Christian sects – Anglican Church (specifically Necessarius) and the Roman Catholic Church (specifically Agnese Forces) – come into conflict.

Tree Diagram Remnant ArcEdit

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The Tree Diagram Remnant Arc is a story arc in Toaru Majutsu no Index. Focusing mostly on the point-of-view of Judgment member Shirai Kuroko, it deals with an important piece of the recently destroyed Tree Diagram, the Remnant, being stolen by Musujime Awaki a fellow teleporter, as well as Misaka Mikoto and her clones' struggle to stop the experiment from happening once again.

Daihasei Festival Arc (Index)Edit

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The Daihasei Festival Arc is a story arc in Toaru Majutsu no Index. It is September 19th, and the time has come for Academy City's annual Daihasei Festival, a sporting event that pits ability users from across the various schools of the city against one another in a series contests. For Kamijou Touma, this year's festivities have come with a twist as he finds himself having to foil a plot that could wreck the fragile balance between the worlds of science and magic.

La Regina del Mare Adriatico ArcEdit

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La Regina del Mare Adriatico Arc or The Queen of the Adriatic Sea Arc is a story arc in Toaru Majutsu no Index. The arc is concerned with Kamijou Touma mysteriously winning a trip to Northern Italy despite his misfortune. Here, he is suddenly caught in another conspiracy by the Roman Catholic Church, this time regarding the mobilization of an ancient weapon against Venice – The Queen of the Adriatic Sea.

Academy City Invasion ArcEdit

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The Academy City Invasion Arc is a major story arc in Toaru Majutsu no Index. It features a series interrelated events occurring in Academy City during Vento of the Front's attempt to search and kill Kamijou Touma, who has now become an enemy of God and the Roman Catholic Church; and Accelerator's struggle to protect Last Order, as he fights against his former mentor Kihara Amata.

In-universe it is called the 0930 Incident, an event that would influence several other events and story arcs to come later in the series, and would be the primary trigger for the final arc of the Toaru Majutsu no Index series before New Testament. This is most notably due to the now apparent hostility between the two sides after the events of the arc as well as the acknowledgment of the existence of "magic", and the ever increasing presence of Kamijou Touma and his Imagine Breaker in magic side affairs.

Skill-Out UprisingEdit

Skill-Out Uprising

The Skill-Out Uprising are a series of events carried out by Komaba Ritoku's Skill-Out gang, and would have culminated in Skill-Out's disabling Academy City's communication network allowing them to attack target espers.

The plan fails after the death of Komaba Ritoku and the turning over of power of his gang to Hamazura Shiage. However, the entire purpose of the plan was later carried out by Accelerator after Ritoku's death.

Document of Constantine ArcEdit

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The Document of Constantine Arc is a major story arc of the Toaru Majutsu no Index series. The arc concerns with Kamijou Touma being sent to Avignon, France, in order to negate the power of the titular artifact, which is being used by the Roman Catholic Church to turn the world against Academy City. However, in order to get to the artifact, he must face Terra of the Left of God's Right Seat.

Battle Royale ArcEdit

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The Battle Royale Arc is a major story arc of the Toaru Majutsu no Index series. It is the only arc known not to even feature a physical appearance of Kamijou Touma, and instead focuses on Accelerator and introduces Hamazura Shiage from the first side story volume as a major protagonist. The arc deals with the conflicts of the underground organizations of Academy City and the Level 5 espers among them, revealing number 2 Kakine Teitoku of SCHOOL, who wishes to displace Accelerator as the strongest, and the number 4 Mugino Shizuri of ITEM, who sees Kakine as her major rival.

Acqua of the Back ArcEdit

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The Acqua of the Back Arc is a major story arc of the Toaru Majutsu no Index series. Following the defeats of Vento of the Front and Terra of the Left, Acqua of the Back sends a warning to Academy City and the Church of England that he intents to eliminate Kamijou Touma. In response, the Amakusa-Style Remix of Church comes to Touma's aid, but they find themselves struggling against a man who is not only a member of God's Right Seat, but a Saint as well.

English Civil War ArcEdit

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The English Civil War Arc is a major story arc of the Toaru Majutsu no Index series. The arc focuses on a magical conflict in the United Kingdom, as Second Princess Carissa launches a Coup d'état for the throne with the backing of the Knights of England. She is opposed by her younger sister Villian, who has the aid of Necessarius, including Index and Kamijou Touma, the two originally in England to investigate a magical attack on the Eurotunnel.

The end of this arc, as well as the following one, would immediately segue into the final arc of the Toaru Majutsu no Index light novels. In this arc, the end of the civil war is marked with Kamijou's first confrontation with Fiamma of the Right, who had taken advantage of the chaos to steal a relic that control Index and grants him access to the grimores in her memory. This is followed by Kamijou leaving Index in the care of Necessarius as he chases after Fiamma into Russia, alone.

DRAGON ArcEdit

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The DRAGON Arc or the DRAGON(≠Angel) Arc is a major story arc of the Toaru Majutsu no Index series. The arc occurs in parallel to the events in the English Civil War Arc, focusing on the happenings in Academy City's dark side. It continues on from the aftermath of the Battle Royale Arc, as Accelerator and GROUP try to track down the mysterious organization known as DRAGON, while Hamazura Shiage finds himself dodging assassins, ultimately finding himself in another confrontation with Mugino Shizuri.

The end of this arc, as well as the previous one, would immediately seque into the final arc of the Toaru Majutsu no Index light novels. In this arc, Last Order falls ill after the manifestation of Aiwass, the latter later pointing Accelerator towards Russia if he wishes to cure Last Order, while Hamazura rescues Takitsubo Rikou and hijacks a plane that is programmed to go to Russia already.

World War III ArcEdit

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The World War III Arc is a major story arc of the Toaru Majutsu no Index series. Notably it marks the end of the original Toaru Majutsu no Index light novels. The arc focuses on the three protagonists, Kamijou Touma, Accelerator, and Hamazura Shiage, heading deep into Russia in order to save the one they hold dear just as the entire world plunges into a Third World War. In order to save Index, Kamijou is hunting down God's Right Seat member Fiamma of the Right, the man who stole the Spiritual Device that controls Index and now has sparked a global conflict in order to fulfill his ambitions. On the advice of Aiwass, Accelerator is searching for anything involving a "different set of supernatural laws" in order to heal Last Order. Meanwhile, Hamazura is searching for a place that can cure Takitsubo Rikou of Body Crystal poisoning, as well as finding materials to blackmail Academy City with.

Shinyaku Toaru Majutsu no Index Story ArcsEdit

Freshmen ArcEdit

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The Freshmen Arc is an arc of the Toaru Majutsu no Index series. Notably it marks the beginning of the Shinyaku Toaru Majutsu no Index light novels. Here, Accelerator and Hamazura Shiage try to return to normal lives after fighting in World War III, only to be drawn back into the darkness of Academy City with the appearance of Kuroyoru Umidori and the Freshmen. Like the GROUP Missions Arc, Kamijou Touma only appears at the end.

Homecoming ArcEdit

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The Homecoming Arc is an arc of the Toaru Majutsu no Index series. Notably it immediately picks up where the previous arc ended, namely the defeat of Kuroyoru Umidori and the return of Kamijou Touma. Leivinia Birdway, leader of the Dawn-Colored Sunlight Magic Cabal, has come to introduce Accelerator and Hamazura Shiage to the world of magic, as well as warn the three heroes of a new magical faction known as GREMLIN, born from the ashes of World War III.

Hawaii Invasion ArcEdit

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The Hawaii Invasion Arc is a major story arc of the Toaru Majutsu no Index series. The three heroes, along with Misaka Mikoto, Kuroyoru Umidori, and Misaka Worst, accompany Leivinia Birdway to Hawaii as they confront members of GREMLIN for the first time and thwart a plot against the United States of America.

Baggage City ArcEdit

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The Baggage City Arc is a major story arc of the Toaru Majutsu no Index series. It focuses on the events in the titular city as it becomes a battlefield featuring members of GREMLIN, the Kihara family, and the participants of the Natural Selector tournament , while Kamijou Touma tries to make up for his actions in Hawaii.

Ichihanaran Festival ArcEdit

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The Ichihanaran Festival Arc is a major story arc of the Toaru Majutsu no Index series. The events of the arc begin the day before the Ichihanaransai, and continue troughout the festival the day after, in mid-November.

It deals with the conflict surrounding the GREMLIN, lead by Othinus, and a group of incredibly powerful magicians, lead by Ollerus, centered around the mysterious being named Fräulein Kreutune who resided in the Windowless Building, the final ingredient in Othinus' plan in creating Gungnir and forever distorting the world. Moreover, it also deals with the reaction of Academy City, and the conflict that arose after Kakine Teitoku returns and joins the foray.

Agitate Halation ArcEdit

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The Agitate Halation Arc is a story arc introduced in Shinyaku Toaru Majutsu no Index. It occurs sometime in mid-November of the current year of the story timeline after the events of the Ichihanaransai in Academy City.

The story arc centers primarily around Fremea Seivelun, who is the linchpin of the plans concocted by Yakumi Hisako, a member of Academy City's Board of Directors, that on the surface tries to create a world without heroes: the Agitate Halation Project.

Magic God Othinus ArcEdit

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The Magic God Othinus Arc is a major story arc introduced in Shinyaku Toaru Majutsu no Index. Initially, this story arc follows on from the previous arcs, with GREMLIN having acquired everything they need to forge Gungnir, which will unify Othinus' infinite possibilities, making her unstoppable. In response to this threat, various factions prepare to attack GREMLIN's base in Sargasso to prevent the completion of the spear and the likely end of the world. However, the strength of the world fails and Othinus destroys and recreates the universe with Gungnir. Here, the story arc then focuses greatly on Kamijou Touma's character, as he withstands Othinus' torturing him via creating new layers of the world and bringing it into a new Phases. Eventually, it reaches the point that they alone can understand each other in the shifting and fluctuating world that Othinus has created, and later, due to Othinus caring for Touma returns the world back to normal. Finally, the story arc returns to Touma's world before Othinus destroyed it and follows their journey to save Othinus and turn her back into becoming a human as the fairy spell that Ollerus used on her is slowly killing her. The arc primarily focuses on Touma and Othinus, but shows the overall effects of their actions on the world and its responses to them.

Toaru Kagaku no Railgun Story ArcsEdit

Level Upper ArcEdit

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The Level Upper Arc is a story arc that occurs within the Toaru Kagaku no Railgun manga and anime. It is the first story arc that occurs within the Toaru Majutsu no Index universe. It focuses on the Level Upper, a device that is sought out after by many people in Academy City as a means to easily gain powers.

Big Spider Arc (Anime-only Arc)Edit

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The Big Spider Arc is a minor story arc that occurs within the Toaru Kagaku no Railgun sidestory. It focuses on Big Spider, a faction of Skill-Out that has recently increased its attack on espers, and Konori Mii's involvement with them.

  • Manga Chapters: Not included in the Manga
  • Anime Episodes: 15, 16

Poltergeist Arc (Anime-only Arc)Edit

Poltergeist Arc

The Poltergeist Arc is a story arc that occurs within the Toaru Kagaku Railgun sidestory. It focuses on the series of earthquakes that are happening all around Academy City, which are called Poltergeist.

  • Manga Chapters: Not included in the Manga
  • Anime Episodes: 17, 18, 19, 20, 21, 22, 23, 24

Sisters ArcEdit

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The Sisters Arc is a major story arc in the Toaru Majutsu no Index universe. Originally only lasting a single volume in the light novels, it is later expanded greatly in the Toaru Kagaku no Railgun manga.

The arc focuses on the ordeals of Misaka Mikoto after discovering the existence Misaka clones that are being used in the Level 6 Shift, an experiment where they are killed as so Accelerator can achieve Level 6.

Silent Party Arc (Anime-only Arc)Edit

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The Silent Party Arc is an anime-original story arc that occurs in the latter half of the Toaru Kagaku no Railgun S anime. It deals with Misaka Mikoto and her friends struggling aginst STUDY and the conspiracy that surrounds a mysterious girl they have met named Febrie.

Daihasei Festival Arc (Railgun)Edit

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The Daihasei Festival Arc (Railgun) is a story arc in Toaru Kagaku no Railgun. Occurring on September 19 on the first day of Academy City's annual Daihaseisai, it is concurrent with the story arc from Toaru Majutsu no Index though doesn't interact with it. The story arc deals with a conspiracy involving during the events of the festival involving Mikoto's Sisters, Shokuhou Misaki, and eventually Misaka Mikoto herself.

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