Darker than Black unfolds ten years after Heaven's Gate appeared in South America and Hell's Gate in Japan, blotting out the natural night sky and changing the world around two mysterious zones where the laws of physics no longer hold. In the wake of the Gates, Contractors emerged: people who trade away part of their humanity in exchange for supernatural abilities. Their powers make them invaluable, dangerous, and difficult to control.
In the Japanese city built around Hell's Gate, Section 4 Chief Misaki Kirihara repeatedly finds herself at odds with Hei, an infamous Contractor known underground as the Black Reaper. Hei works for the mysterious and ruthless Syndicate alongside his associates, carrying out missions that pull him deeper into a hidden conflict over the Gates, the Contractors, and the forces manipulating both. As Misaki investigates the strange incidents surrounding him, she and Hei are drawn into a shadow war where politics and justice matter little and every answer leads to another layer of deception.
Tensai Okamura's sci-fi thriller blends espionage, action, and noir atmosphere into a tense story about power, secrecy, and the price of survival.