Trace

The manga centers on homicide detective Hiroki Dan, the son of a former police superintendent general, and who seems to be on the fast track to career success. He maintains a hidden identity as a serial killer responsible for more than a hundred murders of people he deems beyond the reach of the law. (Source: Anime News Network)

Hiroki Dan, the Chief of the Tokyo Metropolitan Police Department's 1st Investigation Division, is an elite among elites with a brilliant career. But his hidden side is that of a serial killer who dispenses vigilante justice upon sinful villains. This is the second official spin-off of "Trace: Reminiscences of a Forensic Scientist." The devil's enviable record of vengeance, preying upon the wicked, begins again. (Source: Comic Zenon, translated)