In the world of Norse mythology, a human boy falls in love with Waltraute, the fourth Valkyrie sister. He wishes to marry her, but Waltraute gives him an impossible challenge to deter him. Nevertheless, the boy is determined to carry out the dangerous task and to marry Waltraute afterwards. (Source: Baka-Tsuki)

Just before the completion of the Academy City space elevator "Endymion", the main characters Kamijou Touma and Index encounter a level 0 girl named Arisa. The Magicians are after Arisa, and they attack Academy City. A female leader named Shattoaura leads a unit from Academy City against the attack. Kamijou and Index learn from Stiyl that Arisa is key to a brewing war between the sides of Magic and Science. When science and magic cross paths, the story begins with Endymion as its stage!

Welcome to Attraction Land. You all have been brought to this world famous amusement park for a certain task that you have been promised an extraordinary reward for helping us with. We will be asking you to carry out a simple monitoring. We will be showing you documents outlining some experimental attractions as well as image videos for them. Oh, and we would like for you to provide at least three points of improvement for each attraction. Answer everything and do not leave any spaces on your form blank. It does not matter how small a thing it is... Now, it is time to begin monitoring. (Source: official description)

A number of university students are given a simple survey in which they must watch a number of short films and rank them in order of preference. The reader takes the survey along with them with the short films being told as short stories. (Source: Baka-Tsuki)

In Academy City, there is a popular next-generation contest. In reality, this is a hand-to-hand battle between gigantic Virtuaroids that appear on the streets. It's formally called as "Computerized War Machine Virtual-On". Since it can be argued that Level 5s and Level 0s are equal given the technique, it has spread with explosive force among the students of Academy City. One day, Index with her white Bal Bados, fights Touma's stock Temjin. "I'm Ririn. Furashina Ririn. I'm not Ririna... Munya..." A seemingly insomniac girl arrives at Academy City. And, Kamijou has an encounter. The usual Virtual-On meets an unavoidable unprecedented accident. That is, the Computerized War Machines fuse with Academy City, a sign of a grand battle about to happen! Misaka Mikoto and her Raiden, Shokuhou Misaki and her Angelan, as well as many others will make appearances! (Source: Toaru Wiki) *Note: Includes a prologue and epilogue.*

This SS was published in PSP Toaru Kagaku no Railgun: The Complete Visual Guide, and acts as an epilogue for the Railgun PSP game.

A spin-off of the various works of Kamachi Kazuma. One day, Kamijou Touma (A Certain Magical Index) faced yet another misfortune. His toilet was broken and spraying water everywhere. As he was lamenting his misfortune, suddenly he appeared in a strange place along with Index and Misaka. Soon enough, more strange people begin appearing... Includes: A Certain Magical Index Heavy Object The Zashiki Warashi of Intellectual Village The Circumstances Leading to Waltraute's Marriage A Simple Survey A Simple Monitoring

The Academy City, where the pinnacle of science and technology converges to advance psychic development. But behind the seemingly peaceful and glamorous facade of this city lurks a “dark side.” The girls known by the codename “ITEM” are a part of this world. They form an elite unit composed of specialists in various fields, led by the Level 5 esper, Shizuri Mugino. When a new member joins “ITEM,” she will find herself drawn into a conspiracy lurking beneath the city's surface... (Source: Dengeki Daioh, translated)

The Academy City, where "psychic power" is recognized as a "general science." Behind its peaceful facade lies a "shadow" organization undertaking missions too sensitive to be made public. (Source: Dengeki Bunko, translated)

A new Railgun story by Kamachi Kazuma is about to begin! Mikoto, Kuroko, Uiharu, and Saten ...... are all involved in this story!! In addition, the illustrations will be drawn in full color by creators who have been involved in the "Toaru" series, such as Haimura Kiyotaka, Kogino Chuuya, Fuyukawa Motoi, Yamaji Arata, Tachitsu Teto, Nogi Yasuhito, and Kisaragi Nankyoku. Expect a collaboration you won't see very often!

In an alternate world, Beatrice is alone in her brilliant and shining position that she has earned for mastering sword and magic, and she wants to cry a little. It seems she is promised to marry a miniature orc, but what's aggravating her? (Source: Anime News Network)

Both short stories both take place in a world where people known as Killer Demons have each mastered a specific form of killing. Each story follows a different character’s encounter with one of those Killer Demons. Killer Queen and Deep End was originally submitted for but did not win a Dengeki contest before Toaru Majutsu no Index was published. It was later published in 2004 in response to Index’s popularity. Killer Device and Never End was written and published in 2005 due to the popularity of the first story.