Kid Police(2012)

Kid Police is a Japanese drama series about a veteran detective whose body is mysteriously transformed into a child's after inhaling a special gas during a pursuit of the criminal organization Red Venus. Working for the special investigation division of the Kanagawa Prefectural Police Department, the detective must navigate his new physical form while continuing to investigate the dangerous group responsible for his transformation. The series blends crime-solving intrigue with the comedic and dramatic tension of an adult mind trapped in a child's body, forcing the protagonist to adapt his detective skills and methods to his unexpected circumstances. As he uncovers the truth behind Red Venus and the gas that changed him, he must also grapple with how this transformation affects his career, relationships, and sense of identity.