The story revolves around Objects - powerful, massive weapons that change the course of warfare - and Elite Object pilots. An odd Elite girl named Milinda meets Quenser, a student who aims to become a Object mechanic, with the soldier-in-training Heivia on a snowy battlefield.

The story is set in a world where supernatural powers exist through science, and magic exists through religion.

‘University City.’ 2.3 million inhabitants.
80% of the students are active in the ‘Brain Development Program’ and out of those only 7 are Level 5s.

Meet the civilian protagonist Mikoto and her friend Kuroko, maintainers of peace and order at the University district, as members of the 'Judgment'.

The side story of To Aru no Index

The manga focuses on a certain unnamed character who appears throughout the story of A Certain Scientific Railgun and A Certain Magical Index, and whose name is revealed in this story set at Tokiwadai Middle School.

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!

The 4-koma manga follows the adventures of the characters of the world of Toaru Majutsu no Index as they stumble into hilarious shenanigans.

A project to develop new superpowers is underway in Academy City. That project will turn Accelerator into a --?!

A Certain Scientific Accelerator, which Accelerator is the main character. The events of the manga occur after his defeat at the hands of Kamijou Touma and the gunshot wound that he received at the hands of Amai Ao, though it is later revealed that the manga takes place prior to meeting Yomikawa Aiho.

The story is set in a world where supernatural powers exist through science, and magic exists through religion.

In the story, Tōma Kamijō is an ordinary high school boy with terrible academic scores and a power called Imagine Breaker. Imagine Breaker can defeat any other power, but it also undermines Kamijō's own good luck. His Imagine Breaker's immense strength is literally immeasurable, so hapless Kamijō is listed at the supernatural level of 0. He happens to meet a girl in white hanging off his window balcony. The girl says she is being chased by sorcerers, and Kamijō learns that the girl is a Church of England nun whose memories have been forcibly replaced by Index-Librorum-Prohibitorum — the 103,000 forbidden texts by the Church.