Shin Kaiketsu Jouki Tanteidan

A steampunk mystery features masked detectives and a nurse with a hidden past in a city filled with steam-powered technology and costumed criminals. Narutaki, a skilled investigator, teams up with Ling Ling, who becomes both a close ally and assistant. Together, they face adversaries like the Phantom Knight, the Machine Baron, and Dr. Guilty. The series, originally published as Kaiketsu Shoki Tanteidan, includes revised early material and continues with new content across eight volumes.