Toaru Majutsu no Index Wiki

Kamachi signature from the 25th anniversary celebration of Dengeki Bunko.[1]

Kamachi signature from the 20th anniversary celebration of Dengeki Bunko.

Kamachi Kazuma (鎌池和馬 Kamachi Kazuma?) is a Japanese light novel author and the original creator of the Toaru Majutsu no Index light novel series and its spin-off manga series, Toaru Kagaku no Railgun, Toaru Kagaku no Accelerator, and Astral Buddy. He also actively works on the manga and anime adaptations of Index, Railgun, and Accelerator and has worked on other related media such the original plot of the PSP games.

As he uses a pen name,[2] his real name and identity is as of yet unknown.


Before becoming the famous writer of the Index light novel series, Kamachi wrote a story titled Schrödinger's City (シュレディンガーの街 Shuredingā no Machi?) as an entry in the 9th Dengeki Game Novel Prize. Unfortunately, his submission failed to pass the third selection stage.[3] However, his story caught the attention of the editor-in-chief of Dengeki, and Kamachi later became in-charge of writing the book Want to Try Writing (書いてみないか? Kaite-minai ka??), which later became his debut as a professional writer.[3]


Kamachi's identity has been shrouded in mystery. He has little to no media exposure, and like many novelists uses an avatar — a face created from simple shapes like circles or oblongs — as a picture in his publications, often describing himself as: "a new author hoping to take the most unmotivated author picture in the world"; which was his self-introduction in his debut work.[4] Haimura Kiyotaka, the illustrator of the Toaru Majutsu no Index light novels has once described him as "delicately sports-minded",[5] while the author of the Toradora! light novels, Takemiya Yuyuko, upon meeting the author personally was surprised to discover him as "younger than expected".[6]

Kamachi began writing novels while he was still studying as a junior high school student. However, his works were not finished until he graduated from high school.[6]


Kamachi considers writing novels as his pastime, and he takes joy in doing so. In fact, he is noted for his very quick pace of writing. This exemplified by volume 2 of the Index novels which was written at the behest of his editor, and was forced to complete it in 17 days.[7] He is also extremely prolific, apparently managing to write for two of his light novel series on schedule, and at the same time writing for other side projects. Indeed, even Miki Kazuma, editor of the Toaru Majutsu no Index novels has noted the amount of output he has in his autobiography.[8]

On holidays, he plans on the progress of the plot and prepares manuscripts. Kamachi also takes some time to research on materials for the light novels.[9]

List of Works


Light Novels

Web Novels

  • The Zashiki Warashi of Intellectual Village: Jinnai Shinobu's Apocalypse (2014) (web novel, released as part of the Kamachi Kazuma 10th Anniversary Celebration)
  • My Vampire Older Sister and Zombie Little Sister (吸血鬼の姉とゾンビの妹?) (2016-2020) (web novel, original creator, published in the official Kamachi Kazuma website in Dengeki Bunko)
  • Magisterus Bad Trip (マギステルス・バッドトリップ?) (2018-2020) (web novel, original creator, published in Kakuyomu)

Short Publications

  • Killer Princess and Deep End (殺人妃とディープエンド?) (Published in Dengeki h)
  • Killer Device and Never End (殺人器とネバーエンド?) (Published in Dengeki hp Vol.37)

Crossovers and Collaborations


  • Kamachi Kazuma’s 10 Year Structure (鎌池和馬の10年分の構造?) (Published in Kamachi Kazuma Official Website)
  • Kamachi Kazuma and Burger of September (鎌池和馬と9月のバーガー?) (Published in Dengeki Bunko Official Website)
  • My Dengeki Experience (私の電撃体験?) (Published in Dengeki Bunko Official Website)
  • Sushi and Climax (お寿司とクライマックス?) (2014) (Published in Dengeki Bunko Fighting Climax Special Edition Dengeki Bunko Fighting Climax MAGAZINE)


  • Schrödinger's City (シュレディンガーの街?) (Submitted to the 9th Dengeki Game Novel Award)



Video Games

  • Toaru Majutsu no Index Portable (2011) (PSP game, original creator)
  • Toaru Kagaku no Railgun Portable (2011) (PSP game, original creator)
  • Kaku-San-Sei Million Arthur (拡散性ミリオンアーサー?) (2012-2015) (Android phone and iOS, scenario writer)
  • Toaru Majutsu no Index Struggle Battle (とある魔術の禁書目録 (インデックス) 頂点決戦 (ストラグルバトル) ?) (2012-2018) (Android phone and iOS, scenario writer)
  • Toaru Majutsu to Kagaku no Ensemble (とある魔術と科学の群奏活劇 (アンサンブル) ?) (2013) (PSP game, original creator)
  • Toaru Kagaku no Railgun S Puzzle (とある科学の超電磁砲Sパズル?) (2013) (iOS)
  • Yui-Itsu-Sei Million Arthur (唯一性ミリオンアーサー?) (2013-2014) (Android phone and iOS, scenario supervisor)
  • Toaru Majutsu to Kagaku no Puzzdex (とある魔術と科学の謎解目録 (パズデックス) ?) (2014-2016) (Android phone and iOS, original creator)
  • Kai-Ri-Sei Million Arthur (乖離性ミリオンアーサー?) (2014-2020) (Android phone and iOS, scenario writer)
  • Toaru Majutsu no Index (《魔法禁书目录》 Pinyin: Mófǎ Jìnshū Mùlù?) (2017-2022) (Android phone, iOS, and PC, original creator)
  • Han-Gyaku-Sei Million Arthur (叛逆性ミリオンアーサー?) (2018-2019) (Android phone and iOS, scenario supervisor)
  • Toaru Kagaku no Accelerator Minigame (とある科学の一方通行 ミニゲーム?) (2019, ongoing) (PC and Mobile)
  • Toaru Majutsu no Index: Imaginary Fest (とある魔術の禁書目録 (インデックス) 幻想収束 (イマジナリーフェスト) Toaru Majutsu no Kinsho Mokuroku (Indekkusu) Gensō Shūsoku (Imajinarī Fesuto)?) (2019, ongoing) (Android phone and iOS, scenario writer)
  • Godhorn Tech and the 11 Destroyers (神角技巧と11人の破壊者 Shin Kaku Gi Kou to 11-nin no Hakaisha?) (Cancelled) (scenario writer)
  • Toaru Kagaku no Railgun: Spectrum Story (とある科学の超電磁砲 (レールガン) 通心物語 (スペクトルストーリー) Toaru Kagaku no Reerugan: Tsuushin Monogatari?) (2020-2021) (Android phone and iOS, original creator)
  • P Toaru Majutsu no Index (Pとある魔術の禁書目録?) (2020, ongoing) (Pachinko)
  • P Toaru Kagaku no Railgun (Pとある科学の超電磁砲?) (2022, ongoing) (Pachinko)


  • Kamachi once used a picture of an orange with a face on it, all made using circles or other shapes, as an avatar during the first five volumes of the Toaru Majutsu no Index light novels. Since Volume 06, he has switched to a much simpler avatar: various faces created from circles and/or rectangles.
    • As of New Testament, Kamachi began using various photos as an avatar instead of simple shapes.
    • His real life identity is still unknown.
  • According to the Heavy Object A manga series, Kamachi voiced one of two unnamed soldiers in episode 16 of the Heavy Object anime.

See Also

External Links



v  e
Light Novel Author Kamachi Kazuma
Illustrator Haimura KiyotakaItou Tateki
Editor Miki KazumaFujiwaraOnoderaAnanNakajimaYamamotoMiteraHamamura
Designer Watanabe Hirokazu
Manga Manga Artist Kogino ChuuyaFuyukawa MotoiNogi YasuhitoYamaji ArataKisaragi NankyokuMijin KoukaTachitsu TetoAsakura RyousukeFusemachi HajimeHibipon
Designer Kasai ShinKiya ShiiMatsuryu
Story Assistance Nishino RyuuSuzukaze Ryo
Editor Ogino Kentarou • Shimomura Yuuichi • Hama Hayato
Anime Director Nishikiori HiroshiNagai TatsuyukiKamanaka Nobuharu
Character Designer Tanaka Yuichi • Yaegashi Youhei
Music Artist Kawada MamiIKUKurosaki MaonfripSideELISAKishida Kyoudan & THE Akeboshi RocketsTHE SIXTH LIEsajou no hanaIuchi Maiko
Voice Artist List of Voice Artists