Rain Man

Taki Amamiya leads an unremarkable life, reluctantly working at a Parapsychology Research Institute. His mundane existence is abruptly shattered when he receives devastating news: his twin brother, whose very existence Taki was entirely unaware of, has suddenly taken his own life. What initially appears to be a tragic but isolated incident soon proves to be only the unsettling prelude to a far more shocking chain of events that will upend everything Taki thought he knew about himself. Prompted by the investigating authorities, who recommend a deeper inquiry into the circumstances surrounding the suicide, Taki begins to unravel the mysteries tied to his unknown sibling. However, this investigation quickly spirals beyond a simple search for answers. As the authorities and researchers dig further into the case, they uncover an astonishing and seemingly impossible medical anomaly at the center of it all. The probing reveals a startling truth that defies logic and science: despite living a functional life and holding down a job, Taki Amamiya possesses no brain. This terrifying discovery plunges him into an incomprehensible dilemma, blurring the lines between human biology and the paranormal phenomena his institute studies, and leaving him to question the very nature of his own existence.