Brutal

Brutal: Satsujin Keisatsukan no Kokuhaku
ブルータル 殺人警察官の告白

Sequel

A Killer Police Officer's Judgement
Doom: Satsujin Keisatsukan no Danzairoku· ドゥーム 殺人警察官の断罪録
manga

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)

Parent Story

Trace
Trace: Kasouken Houi Kenkyuuin no Tsuisou· トレース 科捜研法医研究員の追想
manga

The Forensics Section. This unique agency is part of the police, but exists neither for the institution nor the victims, simply to find the truth. This authentic police suspense story created by an ex-forensics officer depicts the front line of criminal investigations. (Source: MangaPlaza, edited)