Toaru Kagaku no Railgun Manga Volume 04 is the fourth volume released for the Toaru Kagaku no Railgun manga series.

The tankobon details the first half of Misaka Mikoto's side of the Sisters Arc, as she discovers that there are clones of her, much to her horror. She later bonds with one, but soon discovers that true nature of the clones' purpose, as she witnesses the horrific death of her clone at the hands of the Accelerator.

Publisher's SummaryEdit

Breaking into a new episode! Mikoto has clones called Sisters!?

"Clones of the Railgun live in the city." Mikoto has heard of such urban legends. However, she begins examining the truth behind it despite believing it all to be a hoax. Then one day Mikoto meets one of these Sister clones, and discovers the cruel truth hidden from her...!


Localized ReleasesEdit


魔法禁書目錄外傳 科學超電磁砲 集數 4
A Certain Scientific Railgun Manga v04 Chinese cover

Date of Release May 5, 2010[2]
ISBN ISBN 978-986-237-630-0

美琴雖然覺得只是八卦消息,還是決定去一探究竟調查真相。 而在某天,美琴終於和自己的複製人「妹妹們」其中之一相遇, 卻也揭開了隱藏的殘酷事實…!


A Certain Scientific Railgun Manga Volume 04
A Certain Scientific Railgun Manga v04 cover

Date of Release May 8, 2012[3]
ISBN ISBN 978-1-935934-18-9[3]
Number of Pages 192 pages
The New York Times bestselling series continues!

Welcome to a world where mysticism and science collide, and supernatural powers are derived from either science or religion. At the heart of this world is Academy City, an advanced metropolis whose population is comprised mostly of students. The majority of students are enrolled in the city’s "Power Curriculum Program," where they must learn to master their latent psychic powers. Out of several million students, only seven are deemed powerful enough to have Level 5 status.

Meet Mikoto Misaka, the third most powerful Level 5 esper in Academy City. Together with her best friend Kuroko Shirai and the other members of Judgment, a student-run law enforcement agency, Mikoto delves deep into the dark heart of the scientific sprawl she calls home, and uncovers secrets she wishes she hadn’t!

A Certain Scientific Railgun is a must-have manga series for fans of stories that blend science and magic like Psychic Academy and Full Metal Alchemist.


  1. "とある科学の超電磁砲(4) [A Certain Scientific Railgun (4)"](Japanese). Retrieved 24/12/12.
  2. 科學超電磁砲 (4) from Kadokawa Taiwan (Chinese). Retrieved on 31/12/12.
  3. 3.0 3.1 A Certain Scientific Railgun. Gomanga. Retrieved on 09/01/2015.

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