The Circumstances Leading to a Simple Killer Princess's Marriage Was A Certain Magical Heavy Zashiki Warashi

Set in a city of not only scientifically advanced superhuman students, but in a world where magic is also real. Kamijyo Touma's right hand, the Imagine Breaker, will negate all magic, psychic, or divine powers, as well as his own luck. One day he finds a young girl hanging on his balcony railing. She turns out to be a nun from the Church of England, and her mind has been implanted with the Index Librorum Prohibitorum—all the magical texts the Church has removed from circulation. (Source: Wikipedia) *Note: Includes 16 prologues, 18 epilogues, and 6 extras.*

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.

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai. The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him. (Source: Baka-Tsuki)

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)

Summoning ceremonies can freely call forth even "those which lurk in the depths beyond the gods". One boy has top-level abilities even among the cutting-edge summoners who can use those ceremonies. He is Alice (with) Rabbit aka Shiroyama Kyousuke. But this strongest boy summoner has a single fatal weakness. Certain "cursed words" spoken by girls: "Help me." When Kyousuke hears those words from Meinokawa Higan, a girl brought to the verge of death, he throws himself into a city where three great summoner forces clash! (Source: Baka-Tsuki)

Kwenser came to the Alaskan military base to study Objects, the new weapons that have completely revolutionized war as we know it – battles are fought by soldiers controlling Objects far away from harm. However, when he starts to get close to Object pilot Milinda, will he discover the grim truth behind Heavy Objects?

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)

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 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