A Certain Item of Dark Side (Japanese: とある暗部の少女共棲アイテム, Hepburn: Toaru Anbu no Aitemu)[a] is a Japanese light novel series written by Kazuma Kamachi and illustrated by Nilitsu, which is a spin-off of Kamachi's A Certain Magical Index series, focusing on the women belonging to Academy City's dark side. ASCII Media Works have published four volumes since March 2023 under their Dengeki Bunko imprint. A manga adaptation with art by strelka has been serialized in ASCII Media Works' shōnen manga magazine Dengeki Daioh since October 2023 and has been collected in a single tankōbon volume. An anime television series adaptation has been announced.

Characters

Shizuri Mugino (麦野沈利, Mugino Shizuri)
Voiced by: Ami Koshimizu[1]
Rikou Takitsubou (滝壺理后, Takitsubou Rikou)
Voiced by: Aya Suzaki[1]
Frenda Seivelun (フレンダ セイヴェルン, Furenda Seivuerun)
Voiced by: Maaya Uchida[1]
Saiai Kinuhata (絹旗最愛, Kinuhata Saiai)
Voiced by: Chinatsu Akasaki[1]

Media

Light novels

Written by Kazuma Kamachi and illustrated by Nilitsu, A Certain Item of Dark Side began publication under ASCII Media Works' Dengeki Bunko light novel imprint on March 10, 2023.[2] Four volumes have been released as of March 7, 2025.[3]

No. Release date ISBN
1 March 10, 2023[4]978-4-04-914939-5
  • Prologue: Feminine, Dangerous, Bright (序章 フェミニンデンジャラスブライト)
  • Chapter 1: The Fifth Girl (第一章『五』人目の少女)
  • Chapter 2: >>Colosseum. (第二章 >>Colosseum.)
  • Chapter 3: A Certain Courage, A Secret Reward (第三章 とある勇気、秘密の報酬)
  • Chapter 4: Level 5 Roars (第四章 超能力者は咆哮する)
  • Epilogue: A Road That Leads to Somewhere Someday (終章 いつかどこかに繋がる道)
2 August 10, 2023[5]978-4-04-915081-0
3 June 7, 2024[6]978-4-04-915699-7
4 March 7, 2025[3]978-4-04-916233-2

Manga

A manga adaptation illustrated by strelka began serialization in ASCII Media Works' shōnen manga magazine Dengeki Daioh on October 27, 2023.[7] The manga's chapters have been compiled into a single tankōbon volume of June 2024.[8]

No. Release date ISBN
1 June 26, 2024[8]978-4-04-915751-2
2 April 24, 2025[9]978-4-04-916381-0

Anime

An anime television series adaptation was announced during the "Dengeki Bunko Winter Festival 2025" livestream event on February 16, 2025.[1]

Notes

  1. ^ The kanji 少女共棲 in the Japanese title is read as Shōjo Kyōsei.

References

  1. ^ a b c d e Tai, Anita (February 16, 2025). "Toaru Anbu no Item Spinoff Novels Get TV Anime". Anime News Network. Retrieved February 16, 2025.
  2. ^ Hazra, Adriana (January 2, 2023). "Kazuma Kamachi Launches 'A Certain' Series Spinoff Novels About ITEM Group in March". Anime News Network. Retrieved February 25, 2025.
  3. ^ a b とある暗部の少女共棲(4) (in Japanese). ASCII Media Works. Retrieved February 16, 2025.
  4. ^ とある暗部の少女共棲 (in Japanese). ASCII Media Works. Retrieved February 16, 2025.
  5. ^ とある暗部の少女共棲(2) (in Japanese). ASCII Media Works. Retrieved February 16, 2025.
  6. ^ とある暗部の少女共棲(3) (in Japanese). ASCII Media Works. Retrieved February 16, 2025.
  7. ^ Cayanan, Joanna (April 28, 2023). "'A Certain' Series' Toaru Anbu no ITEM Spinoff Novels Get Manga Adaptation (Updated)". Anime News Network. Retrieved February 16, 2025.
  8. ^ a b とある暗部の少女共棲1 (in Japanese). ASCII Media Works. Retrieved February 16, 2025.
  9. ^ とある暗部の少女共棲2 (in Japanese). ASCII Media Works. Retrieved March 1, 2025.
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