A Certain Item of Dark Side
| A Certain Item of Dark Side | |
First light novel volume cover, featuring Frenda Seivelun and Shizuri Mugino | |
| とある暗部の少女共棲 (Toaru Anbu no Aitemu) | |
|---|---|
| Genre | |
| Light novel | |
| Written by | Kazuma Kamachi |
| Illustrated by | Nilitsu |
| Published by | ASCII Media Works |
| Imprint | Dengeki Bunko |
| Demographic | Male |
| Original run | March 10, 2023 – present |
| Volumes | 4 |
| Manga | |
| Written by | Kazuma Kamachi |
| Illustrated by | strelka |
| Published by | ASCII Media Works |
| Imprint | Dengeki Comics NEXT |
| Magazine | Dengeki Daioh |
| Demographic | Shōnen |
| Original run | October 27, 2023 – present |
| Volumes | 2 |
| Anime television series | |
A Certain Item of Dark Side (Japanese: とある暗部の少女共棲, Hepburn: Toaru Anbu no Aitemu) 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 two tankōbon volumes. An anime television series adaptation has been announced.