In the near future, an invention known as the Manifestation Engine (示現エンジン, Jigen Enjin) has solved all of the world's energy-related problems five years ago.

Just when all hope seems lost, Kenjirou gives Akane a special key which will allow her to access the Vivid System (ビビッドシステム, Bibiddo Shisutemu), the only thing that can defeat the Alone.

Now wearing a Palette Suit (パレットスーツ, Paretto Sūtsu) special warfare armor, and possessing abilities unlike anything she ever imagined, Akane fights to protect the world from the Alone.

A four-panel comic strip manga series, illustrated by Kotamaru and titled Vividred Operation: The 4koma Viviop (ビビッドレッド・オペレーション The 4コマ びびおぺ, Bibiddoreddo Operēshon: Za Yonkoma Bibiope), was serialized between the November 2012 and May 2014 issues of ASCII Media Works' Dengeki G's Magazine.

[2] A second manga, illustrated by Keito Koume and titled Vividred Operation, was serialized between the May 2013 and April 2014 issues of Dengeki G's Magazine.

[16] Carl Kimlinger of Anime News Network gave Vividred Operation a B+ based on the first six episodes, saying, "The series' execution makes it easy to enjoy the story's strengths and hard to hold its many, many weaknesses against it.

"[17] Dan Barnett of UK Anime Network gave the first three episodes an 8 out of 10, calling it "not to be missed", although he noted that "Vividred can't seem to decide what kind of an audience it's going for and has instead diluted the experience by trying to go for all of them at once.