Light Yagami's ideology about justice undergoes a significant evolution throughout the series "Death Note." In the beginning, he believes in using the Death Note to rid the world of criminals and create a utopia free of wrongdoing. However, as the series progresses, his thirst for power and his god complex lead him to adopt a more manipulative and ruthless approach to achieving his version of justice. This evolution ultimately leads him down a dark path where he becomes consumed by his own sense of righteousness and loses sight of his initial ideals.
