The "thread of the brain," commonly known as Your Forma, is a revolutionary medical technology that emerged from the 1992 pandemic of viral encephalitis. This once life-saving technique has now evolved into an essential brain-invasive information terminal in everyday life. In this world, everything—what is seen, heard, and even emotions—can be recorded.
In the investigation of major criminal cases, special investigators known as Densaku-kan (Electric Investigation Officers) dive into the collective memory, called Kiki, which stores all these records. The youngest genius to ever take on the position of a Densaku-kan is a brilliant girl, Etika Hieda. Due to her exceptional talent, she has become isolated, but her new partner is assigned to her—a humanoid robot named Amicus named Harold, with blonde hair and blue eyes.
Together, the strongest duo will uncover every secret...!