Ex-Arm is a Japanese science fiction manga series written by HiRock and illustrated by Shinya Komi. The series is a remake of Komi's earlier manga Ex-Vita. It was serialized in Shueisha's manga magazine Grand Jump from February 2015 to December 2017, and later on Shueisha's Shōnen Jump+ website from December 2017 to June 2019. Shueisha compiled its chapters into fourteen volumes. A sequel manga titled Ex-Arm EXA was serialized in Grand Jump Mucha from August 2019 to February 2021 and compiled into two volumes.
An anime television series adaptation by Visual Flight aired from January to March 2021.
Plot
In 2014, a high school student named Akira Natsume endures a phobia of electrical devices while also being very good at diagnosing them. He leads an average, unfulfilling life, and resolves to change himself for the better and get a girlfriend after being motivated by his older brother. Soon after, he suddenly dies in an accident. 16 years later, a young policewoman named Minami Uenozono and her android partner Alma retrieve and activate a highly advanced AI superweapon known as an "Ex-Arm" and put it into full control of their ship as a last resort. The AI turns out to be Akira's brain, now in a digital form. The series revolves around the police force's attempts to suppress and defeat adversaries using Ex-Arms for their own purposes.