Chousuinou Kei: Makafushigi Jiken File

Kei Kazaoka appears to be an ordinary high school sophomore, but hidden within his mind lies something truly extraordinary: an "ultra" computer embedded directly in his brain. This remarkable implant grants him intellectual capabilities far beyond those of any average teenager, transforming his everyday life as a student into something altogether more unusual. Putting his heightened intelligence to practical use, Kei lends his abilities to the police, assisting them in cracking baffling cases—mysteries so strange and inexplicable that they lie entirely beyond the boundaries of conventional human reasoning. Where standard deduction reaches its limits, his computer-enhanced mind steps in, attempting to untangle puzzles that would leave even seasoned investigators at a loss. Yet the challenges Kei faces are far from ordinary crimes. Most of the cases that come his way are rooted in the supernatural and the magical—phenomena that seem to defy logic itself. Even with a machine's precision operating inside his head, he must confront enigmas that push against the very nature of reason, making every new case file a gripping test of his extraordinary gift.