Light Yagami's sense of morality evolves drastically throughout the series "Death Note." At the beginning, he is portrayed as a highly intelligent yet morally questionable character who believes he is cleansing the world of criminals by using the Death Note. As the series progresses, his sense of morality becomes increasingly skewed and he becomes more power-hungry and consumed by the idea of becoming a god-like figure. Eventually, he loses touch with his original intentions and descends into darkness, showing a complete disregard for human life and ethics.