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.

In 2016, in the Austrian city of Miliopolis (formerly known as Vienna), people believe in various gods, and they fight and throw their lives away for them. One day, the religious student Touma runs into a beautiful young woman named Ageha. Shortly thereafter, they're attacked by terrorists. Then Touma learns, as she rescues him, that she's actually a human weapon, with high-tech mechanized body parts. Ageha, and others like her, fight terrorism in the chaos of Miliopolis! Source: MU

Aoi is a moé-type maid working on a wealthy Osaka estate. In reality, though, she is an undercover detective sent by the police on a special mission to investigate a suspect. (Source: Tokyograph)

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!

Featuring the stunning work of Kiyotaka Haimura! This collection of illustrations, rough sketches, and more is sure to please any diehard lovers of the beautiful artwork decorating the covers and pages of Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria! Included are a long format interview between Kiyotaka Haimura and the author Fujino Omori, an exclusive short story, and illuminating scribbled commentary by Kiyotaka throughout!

Gaiten Shoku is a series of light novels that physically compile side-stories for the Toaru Majutsu no Index franchise that were originally included in DVD/Blu-Ray limited editions, magazine issues of Monthly Comic Dengeki Daioh, and other various releases. **Included Stories in Volume 1 (2020/6/10):** *\- Kanzaki Kaori (神裂火織編); 2010/1/29 - 2010/8/27 \- Necessarius Special Admission Test (『必要悪の教会』特別編入試験編); 2013/7/24 - 2014/2/24 \- Road to Endymion (ロード トゥ エンデュミオン); 2013/2/23* **Included Stories in Volume 2 (2020/8/7):** *\- A Certain Scientific Railgun SS (とある科学の超電磁砲SS); 2009/1/23 - 2009/8/21 \- A Certain Scientific Railgun SS2 (とある科学の超電磁砲SS2); 2011/1/26 - 2011/9/22 \- Cold Game (コールドゲーム); 2017/12/27* **Included Stories in Volume 3 (2024/12/10):** *\- Agnese's Magic Side Work Experience (アニェーゼの魔術サイドお仕事体験編); 2020/4/30 - 2020/12/25 \- Biohacker (バイオハッカー編); 2019/10/30 - 2020/2/28* **Included Stories in Volume 4 (2025/2/7):** *\- Stativarius (ステートバリウス編); 2018/12/26 - 2019/7/31 \- A Truly Crazy Way to Get Misaka Mikoto and Shokuhou Misaki to Flirt (御坂美琴と食蜂操祈をイチャイチャさせる完全にキレたやり方); 2025/2/7*

An anthology story co-written by Kōshi Tachibana, Fujino Ōmori, Yu Shimizu, Yuichiro Higashide, and Tarou Hitsuji. The main artist is Tsunako, with additional color pages also drawn by NOCO, Kiyotaka Haimura, and Haruyuki Morisawa. Now, let's start the battles (anthology) of great writers! In honor of the 10th anniversary of the Date A Live series, a great anthology book is coming out! Will all fans fall in love with these specially written cute short stories from the authors who love the series!?