Light Yagami in the anime "Death Note" handles the moral ambiguity surrounding his role as Kira by initially justifying his actions as a means to create a more just world by eliminating criminals. He becomes increasingly consumed by his power and belief in his own righteousness, which leads him to justify darker and more extreme actions in the name of his vision of justice. Ultimately, he becomes more ruthless and manipulative, blurring the lines between right and wrong as he becomes more obsessed with maintaining his power as Kira.
