4-koma Koushiki Anthology: Toaru Kagaku no Railgun x Toaru Majutsu no Index

The 4-koma Koushiki Anthology: Toaru Kagaku no Railgun x Toaru Majutsu no Index (4コマ公式アンソロジー とある科学の超電磁砲×とある魔術の禁書目録) is an official anthology comic series based on both Toaru Kagaku no Railgun and Toaru Majutsu no Index. Three volumes were released by Dengeki Comics, two in 2012 and one in 2013. All three have 4-koma stories created by various mangaka and artists including Kazuma Kamachi, Kiyotaka Haimura, and Motoi Fukuyawa.

Background
The first volume was released on March 27, 2012 and has stories illustrated by Inue Shinsuke (artist of the first Heavy Object manga), Kino, Sato, and Namori. The second volume was released on October 27, 2012 and has stories illustrated by Umino Tomo. The third volume was released on March 27, 2013 and has stories illustrated by Inue Shinsuke as the illustrator.

Volumes

 * 4-koma Koushiki Anthology: Toaru Kagaku no Railgun x Toaru Majutsu no Index Volume 01
 * 4-koma Koushiki Anthology: Toaru Kagaku no Railgun x Toaru Majutsu no Index Volume 02
 * 4-koma Koushiki Anthology: Toaru Kagaku no Railgun x Toaru Majutsu no Index Volume 03