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Manga / A Certain Scientific Accelerator

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"This is a fight between villains. You're not a villain, so stand back and stay quiet."

A Spinoff of A Certain Magical Index, first released on December 27, 2013 in Japan before it was released overseas in various languages.

Accelerator is the #1 most powerful Esper in Academy City, a state-of-the-art city dedicated to the scientific study and development of Psychic Powers. Every student in Academy City is given an "Esper Rank" to indicate their power, and Accelerator is a Level 5 with the ability to manipulate vectors, hence his name. Following his defeat at the hands of Touma Kamijou in A Certain Magical Index and subsequent Heel–Face Turn, Accelerator heads out on his path to redemption. During this time, he would meet up with Anti-Skill officer Aiho Yomikawa.

This manga spinoff is an original side-story written by Kazuma Kamachi. It is the second spinoff, after A Certain Scientific Railgun. Continuity-wise, it begins sometime between Light Novels 7 and 8 of A Certain Magical Index.


It currently has seven volumes published. An anime adaptation by JC Staff is in the works for July 2019.

Tropes found in this series:

  • Clean Up Crew: Scavenger is a gang employed by Academy City's Board of Directors to swoop in after battles to terminate stragglers and witnesses.
  • Cuteness Proximity: Invoked. When Last Order needs to get a girl away from some thugs, she just walks up to them and smiles cutely. Confused, they smile back, distracting them long enough for Last Order to grab the girl and run away.
  • Do Not Taunt Cthulhu: In the first chapter, the Disciplinary Action officers are given strict orders to not bother Accelerator. When he decides to come outside and ask some questions, one decides to fight him off.
  • Dirty Cop/Lawman Gone Bad: The rank and file of DA, an organization that appears to be fighting mages and espers.
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  • Drama-Preserving Handicap: Accelerator is normally a nigh Physical God, even after his depowering. Thus the story takes place shortly after his depowering when he's not only still recovering from his head injury, but his collar powering his abilities only lasts 5 minutes, weakening him to the point where he now cannot utterly destroy his opponents.
  • Due to the Dead: Accelerator expresses his disgust at how DA treats dead bodies.
  • Failed a Spot Check: Accelerator has a tendency to use his Attack Reflector to reflect annoying sounds, so he completely fails to notice the girl shouting at him five feet away.
  • Fantastic Racism: DA has a problem with espers.
  • Heroic RRoD: Pushing himself and his powers too much causes Accelerator to collapse and his bullet wound to open up.
  • Humongous Mecha: In chapter 1, DA has one powered by a dead esper.
  • Justice Will Prevail: DA officers constantly say this.
  • Knight Templar: The fake Anti-Skill officer working for DA believes it's his duty to destroy evil espers. In fairness, calling Accelerator evil isn't that much of a stretch, but he seems to have a very broad definition of the term.
  • Know When to Fold 'Em: Even when using a giant mech with the equivalent of level 5 telekinesis, Higata knows better than to tangle with Accelerator.
  • Mugging the Monster:
    • After Scavenger decides to kill everyone in the area to protect the Misaka clone (including the people who are trying to rescue her), Accelerator shows up. It's only after he's shrugged off their most powerful attacks that they realize who he is.
    • Subverted in the second arc. A girl tells some thugs to be careful about who they attack, because she's an esper. They start freaking out... until she proudly says she's a level one.
  • Mysterious Waif:
    • The first chapter starts with a girl in a cloak looking for Accelerator to talk to him about Last Order, but she is dragged off by a DA officer before she can get his attention.
    • The second arc begins with a case containing a strange girl being accidentally dropped off right next to Accelerator, who is relaxing on the top of a tower at the time.
  • Necromancer: Estelle Rosenthal, the mage looking for Last Order, is a necromancer who was originally working with DA.
  • Origins Episode: The manga serves as the origin story on how Accelerator and Aiho Yomikawa first met in Academy City.
  • Our Zombies Are Different: Estelle revives a corpse by implanting its brain with a spell that works as its mind, and it pretty much acts exactly like a robot that happens to be made out of meat.
  • Poor Communication Kills: Scavenger is hired to keep the Misaka clone out of DA hands, while Estelle is trying to rescue her. Scavenger decides that the best way to keep her safe is to kill everyone else, so they fight both DA and Estelle. When Accelerator shows up, they try to fight him too.
  • Shockwave Stomp: In chapter 1, Accelerator opens up a massive chasm in the street this way.
  • Slipped the Ropes: The girl who was captured in chapter 1 managed to escape on her own while Accelerator was fighting.
  • Throwing Your Sword Always Works: In chapter 5, a DA thug throws his Vibro Weapon at the ceiling to collapse it and distract the heroes long enough to run away.
  • To the Pain: In chapter 5, Accelerator describes to a DA thug what will happen to him once his blood flow and bio-electricity is reversed. The thug gets so scared that he faints.
  • Underestimating Badassery: The DA officer in chapter 1 thinks that Accelerator is helpless with his brain damage. Accelerator doesn't even need to turn on his Amplifier Artifact to defeat him.
  • Vibro Weapon: A DA thug in chapter 4 brandishes one of these called the Random Number Ultrasonic Generator and says he wants to test if Accelerator can't reflect it. He gets disarmed before he has a chance to use it. The blade wrecks the floor when it lands.
  • Weirdness Censor: Like most Science Side characters, Accelerator mistakes magic that he witnesses for esper powers, even when Estelle outright uses Magi Babble.
  • You Have Failed Me: DA has their operative Nishio terminated for failing to capture Estelle. Accelerator and Estelle later find his corpse while breaking into one of their headquarters.

Alternative Title(s): To Aru Kagaku No Accelerator


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