Darker than Black: Shikkoku no Hana, Dimension W Recommendations
Created by Yuuji Iwahara, expect quite a bit of similarities from both series. The main male protagonist has a cold personality and often portrayed as a lone wolf to get jobs done. Their job also deals with dangerous individuals as they try to make a difference in their worlds. Both series' fictional world setting also explores individuals with special abilities acquired by mysterious means. There is a decent amount of action with story building. Recommended for fans interested in sci-fi thrillers.