In "Death Note," the theme of the corruption of noble ideals is explored through the character Light Yagami. Initially, Light believes that by using the Death Note to rid the world of criminals, he is upholding justice and creating a better society. However, as he becomes more power-hungry and obsessed with his own sense of justice, Light's actions become increasingly extreme and he starts to lose sight of his original noble goal. This gradual descent into moral ambiguity and corruption showcases how noble ideals can be twisted and perverted when taken to the extreme.
