Pluto: urasawa x tezuka, vol. 5 (Viz Media)

In a distant future where sentient humanoid robots pass for human, someone or some thing is out to destroy the seven great robots of the world. Europol's top detective Gesicht is assigned to investigate these mysterious robot serial murders - the only catch is that he himself is one of the seven targets. A robot may not harm or kill a human being. Article 13 of the Robot Laws Adolph, a member of a robot hate group, is being used as a pawn and hunted down by the members of his own brotherhood. He must now turn to his worst enemy for protection, Gesicht, the robot who he believes killed his own brother.