In "Death Note," Light Yagami strategically uses manipulation of information and perception to achieve his goal of creating a world free of crime. He carefully controls the narrative surrounding the mysterious deaths caused by the Death Note to shape public opinion in his favor. By manipulating how people perceive Kira (his alter ego) and the justice he claims to deliver, Light effectively gains support and instills fear among those who oppose him. This manipulation allows him to stay one step ahead of his adversaries and maintain his position of power.