Hanzai Shokogun Season 2

One year ago, a woman who was cherished by two men was murdered. Former detective Muto Takashi (Tamayama Tetsuji) is her older brother who had loved her as if he were her father after their parents died young. His good friend Kaburagi Wataru (Tanihara Shosuke), a senior detective, was actually her boyfriend and she was the only one Kaburagi loved in his lonely life. Kaburagi counsels Muto and attempts to persuade him to forget the past. However, Kaburagi is the one who crosses the line and gets consumed by revenge.

Synopsis: JDrama Weblog