History Trivia / ACertainMagicalIndex

* ExecutiveMeddling: The manga adaptation skipped Deep Blood arc which features Aisa Himegami as the female deuteragonist [[https://m.imgur.com/a/2A7wmgx due to the Editorial Staff wanting to reach the Science Side and Mikoto-focused story arc (namely Sister arc) quickly]]. Unfortunately, skipping that story arc means sacrificing important character growth for the male lead Touma Kamijou and AdaptationInducedPlothole as well, since Deep Blood arc had never happened in the manga, therefore Himegami's life was never in danger (at least before Daihaseisai) and she would have absolutely no reason to transfer school from Kirigaoka Girls Academy (one of the elite schools in Academy City) to Touma's high school (which is just an ordinary school with many Level 0s).

* ActingForTwo: In the dub, Mikoto, the Sisters, Last Order, and WORST (and Dolly in ''Railgun'') are all voiced by the same actress, while in the original they had a unique actress for each.

* PlayingAgainstType:
** Creator/BrynApprill as Awaki Musujime of GROUP.
** Creator/AustinTindle as Accelerator.
** Both Creator/AkikoHiramatsu and Creator/KaraEdwards for Vent / Vento of the Front.
** Both Creator/KeiShindou and Creator/DawnMBennett for Carissa.
** Both Creator/AiKakuma and Creator/BrittneyKarbowski as the AxCrazy EvilTwin Misaka Worst.

* RealitySubtext: In the Index-tan special, Creator/AtsushiAbe (ss Touma Kamijou) used a voice changer to ask Kaori Kanzaki about her age, her Stripperific outfit, ''and'' her [[Creator/ShizukaIto voice actress']] LadyDrunk antics in the launch of the anime.

* RealitySubtext: In the Index-tan special, AtsushiAbe (ss Touma Kamijou) used a voice changer to ask Kaori Kanzaki about her age, her Stripperific outfit, ''and'' her [[Creator/ShizukaIto voice actress']] LadyDrunk antics in the launch of the anime.

* RealitySubtext: In the Index-tan special, AtsushiAbe used a voice changer to ask Kaori Kanzaki about her age, her Stripperific outfit, ''and'' her [[Creator/ShizukaIto voice actress']] LadyDrunk antics in the launch of the anime.

* RealitySubtext: In the Index-tan special, someone who used a voice changer asked Kaori Kanzaki about her age, her Stripperific outfit, ''and'' her [[Creator/ShizukaIto voice actress']] LadyDrunk antics in the launch of the anime.

* ActingForTwo: In the dub, Mikoto, the Sisters, and Last Order are all voiced by the same actress, while in the original they had a unique actress for each.

** Due to child pornography incident that ended Creator/ScottFreeman's career, the role of Pierce Aogami is casted to Patrick [=McAlister=].

* TheWikiRule: [[http://toarumajutsunoindex.wikia.com/wiki/Toaru_Majutsu_no_Index_Wiki Toaru Majutsu no Index Wiki]]

* AdaptationFirst: The ''LightNovel/ACertainMagicalIndex'' anime was the first to be localized, released late 2012. The original light novels, however, only started coming out in English in late 2014.

* RelationshipVoiceActor:
** Many voices from Manga/ShugoChara show up in this series: [[Creator/KanaeIto Saten as Amu]], [[Creator/AkiToyosaki Uiharu as Suu]], [[Creator/AtsushiAbe Touma as Kuukai]], [[Creator/KanaAsumi Hyouka as Ran]], Komoe as Pepe, [[Creator/NobuhikoOkamoto Accelerator as Musashi]], and [[Creator/RieKugimiya Agnese as Yua]].
** [[Creator/RieKugimiya Agnese]] and [[Creator/AyakoKawasumi Laura Stuart]] have appeared together many times before: [[Anime/PilotCandidate Ikhny and Kazuhi]], [[LightNovel/BludgeoningAngelDokuroChan Sabato and Shizuki]], [[LightNovel/ShakuganNoShana Shana and Kazumi]], [[LightNovel/TheFamiliarOfZero Louise and Henrietta]], [[Anime/{{Potemayo}} Nene and Mikan]], [[LightNovel/KyouranKazokuNikki Mujaki and Eru]], [[Manga/HayateTheCombatButler Nagi and Athena]], [[LightNovel/LadiesVersusButlers Kaoru and Tomomi]], [[LightNovel/OkamiSan Mimi and Otsuu]], and [[LightNovel/AriaTheScarletAmmo Aria and Jeanne]].
** ''Manga/MaidSama'' and this series have a ''ton'' of overlapping voicing: [[Creator/AyumiFujimura Seiri as Misaki]], [[Creator/NobuhikoOkamoto Accelerator as Usui]], [[Creator/AtsushiAbe Touma as Hinata]], [[Creator/KanaHanazawa Sakura as Erii]], [[Creator/AyakoKawasumi Laura as Minako]], [[Creator/AkiToyosaki Uiharu as Satsuki]], [[Creator/KanaAsumi Hyouka as Honoka]], [[Creator/MariyaIse Lucia as Erika]], [[Creator/KanaUeda Mii as Subaru]], and [[Creator/HarumiSakurai Awaki as Sayu]].
** ''Ro-Kyu-Bu!'' has ''nearly'' all voice actors from ''Index'' and ''Railgun''.
** Half of the Japanese female voice cast (and some of the male cast, too) worked together in ''Anime/QueensBlade''.
** Both the Japanese and English casts share several actors with ''LightNovel/OkamiSan''.
** [[Creator/BrittneyKarbowski Mikoto]] and [[Creator/MonicaRial Index]]'s dub actors were Black Star and Tsubaki in ''Manga/SoulEater.'' [[Creator/MicahSolusod Toma's VA]] also played Soul himself.
** As it is also produced by the same studio, ''Manga/{{Bakuman}}'' also features a lot of voice actors from the Toaru series.

* TalkingToHimself: In the dub, Mikoto, the Sisters, and Last Order are all voiced by the same actress, while in the original they had a unique actress for each.