This is a story of four girls living in the "Dark Side" of Academy City. 
 
In Academy City where "ESP" has been recognized as a general science. Behind the peace, there is a Dark Side organization that undertakes missions that cannot be made public. 
 
"ITEM" is an elite unit consisting of four girls. Takitsubo Rikou is able to read and track the AIM fields emitted by those with abilities. Frenda Seivelun, who excels in combat using explosives and traps. 
 
Kinuhata Saiai, who can manipulate nitrogen at will and plays a defensive role. And one of the 7 Espers that Academy City is proud of: Mugino Shizuri. They live freely in the darkness of the Academy City, and quietly set their sights on their target...! 
 
This is a story of encounter, friendship, and darkness that eventually leads to a terrible incident! 
 
(Source: Kadokawa, translated)

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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)

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)

Choubi Hanano