Toaru Majutsu no Index Wiki

This article is about the manga. For the title character and ability, see Yuuri Senya.

Astral Buddy (アストラル・バディ Asutoraru Badi?), formally known as Toaru Kagaku no Railgun Gaiden: Astral Buddy (とある科学の超電磁砲レールガン外伝 アストラル・バディ Toaru Kagaku no Choudenjihou (Rērugan) Gaiden Asutoraru Badi?, lit. "A Certain Scientific Railgun Side Story: Astral Buddy"), is the eighth manga series that is based off the Toaru Majutsu no Index franchise and the fourth to be published in Monthly Comic Dengeki Daioh following Toaru Idol no Accelerator-sama. The series is a spin-off to Toaru Kagaku no Railgun and is an original story written by Kamachi Kazuma with artwork done by Nogi Yasuhito; the series is edited by Ogino Kentarou.

The series began serialization on April 26, 2017 and has completed serialization with 4 published volumes on October 26, 2020. Seven Seas Entertainment later acquired the license to localize the manga.[1]


The events of the manga feature Hokaze Junko, a prominent girl in Shokuhou Misaki's clique previously referred to as the ringlet curl girl, as the main character as she gets involved in an incident that takes place alongside the Dream Ranker Arc in the parent series.[2]

The manga's announcement coincided with the 10th Anniversary of the Toaru Kagaku no Railgun manga. It was also announced alongside 5 other new series including a new Kino no Tabi -the Beautiful World- manga.[3]


Chapters and Volumes[]


Astral Buddy Manga Volume 01
First Part of the Astral Buddy Arc
Astral Buddy Manga v01 cover
Release Date 日本語 November 27, 2017[4]
English February 19, 2019
ISBN-13 日本語 ISBN 978-4-04-893434-3
English ISBN 978-1-642750-36-2
Number of Pages 172 pages
Cover Characters Chapters
Shokuhou Misaki's clique is, of course, made out of only middle school girls from Tokiwadai.

The ringlet curl girl of Shokuhou's clique—Hokaze Junko. This girl is the owner of the Level 4 ability Rampage Dress...
Astral Buddy Manga Volume 02
Second Part of the Astral Buddy Arc
Astral Buddy Manga v02 cover
Release Date 日本語 September 27, 2018[5]
English July 23, 2019
ISBN-13 日本語 ISBN 978-4-04-912050-9
English ISBN 978-1-642750-76-8
Number of Pages 194 pages
Cover Characters Chapters
The number 2 of Shokuhou's clique, the "Ringlet Curl Girl", Hokaze Junko, has her body possessed by the ghost girl and played around with her all day.

Meanwhile, Shokuhou Misaki is chasing after the disturbing event happening in Tokiwadai Middle School under the surface. However, she falls for the enemy's devious trap and loses consciousness.

Hokaze Junko rushes to save Shokuhou, however, strong enemies surround her……?
Astral Buddy Manga Volume 03
Third Part of the Astral Buddy Arc
Astral Buddy Manga v03 cover
Release Date 日本語 July 26, 2019[6]
English July 14, 2020
ISBN-13 日本語 ISBN 978-4-04-912643-3
English ISBN 978-1-64-275745-3
Number of Pages 192 pages
Cover Characters Chapters
In order to rescue the kidnapped Shokuhou Misaki, Hokaze Junko proceeded to enemy territory alone. She seemed to have barely defeated the enemy that stood in her way, Yumiya Iruka. However, final move Iruka has taken is to resolve herself to self destruction...!?

――And then, the repulsive past that was the origin of all of the incidents is made clear!!
Astral Buddy Manga Volume 04
Fourth Part of the Astral Buddy Arc
Astral Buddy Manga v04 cover
Release Date 日本語 October 26, 2020[7]
English August 24, 2021
ISBN-13 日本語 ISBN 978-4-04-913390-5
English ISBN 978-1-64505-468-9
Number of Pages 242 pages
Cover Characters Chapters
After defeating the mastermind of the case targeting Shokuhou’s Clique, Yumiya Iruka, and her collaborator, Houjou Arei, Hokaze’s life seemed to have regained peace.

However, this time the #7 Level 5, Sogiita Gunha, challenges Hokaze to a match! In front of the overwhelming difference in ability, Hokaze was left on the defensive, but...!?

And... despite the turmoil that befalls Hokaze, the true mastermind, Mitsuari Ayu, steadily advances her plan.

The incident that originated with a ghostly disturbance, finally engulfs the whole of Academy City into chaos!!!

Chapters Not in Volume Format[]


  • According to a now deleted tweet by Nogi Yasuhito, the original plot for Astral Buddy didn't have Shokuhou Misaki showing up at all and Kongou Mitsuko was supposed to appear sometime around the second or third chapter, but all that changed when developing the plot into an actual manga.[8]
  • According to Ogino Kentarou, Astral Buddy's chapter title is named by Nogi Yasuhito himself.[9]
  • The title of Astral Buddy does not follow the naming convention of Toaru franchise. (e.g. Toaru XX no OOOO)


Astral Buddy is mainly drawn by Nogi Yasuhito and edited by Ogino Kentarou, but some other notable staffs are also in charge of the series.

Name Role Volumes
Ito Yukinobu (伊藤 ユキノブ) Cover/Volume Design Volume 1-4
Kichiroku (キチロク) Cover Painter Volume 1-3
塩こうじ Cover Painter Volume 4
加藤裕介 Assistant Editor Volume 1-4
岡本 術 Production Assistant Volume 1-4

External Links[]



v  e
Main Series Toaru Majutsu no Index 123455.56789101111.512131415161718192021222324252627282930
Toaru Kagaku no Railgun 12345678910111213141516171819
Toaru Kagaku no Accelerator 123456789101112
Astral Buddy 1234
Toaru Kagaku no Dark Matter 1
Toaru Kagaku no Mental Out 123
Toaru Anbu no Item 1
4-Koma Series Toaru Nichijou no Index-san 12345
Toaru Idol no Accelerator-sama 1234
Special Stories Miracle of Endymion 12
Crossover 12
Toaru Majutsu no Virtual-On 123
Anthology Manga 4-koma Koushiki Anthology 123
Koushiki Comic Anthology 12
Comic Anthology Dear 1
v  e
Astral Buddy
Volume 1 12345
Volume 2 678910111212.5
Volume 3 13141516171819
Volume 4 2021222324252627282930
Other Chapters 5.521.5