Light Yagami, the main character in the anime series "Death Note," initially believes that his use of the Death Note is justified in his quest to rid the world of criminals and create a utopia. He rationalizes his actions by convincing himself that he is serving the greater good and that sacrificing a few lives is necessary for the betterment of society. As the series progresses, Light becomes increasingly consumed by his power and his ego, leading him to justify more extreme and morally questionable actions. Ultimately, Light's handling of the ethical dilemmas posed by his use of the Death Note is characterized by his descent into darkness and moral ambiguity.
