As Kira, Light Yagami struggles with internal conflicts throughout the series "Death Note." Initially, he believes he's using the Death Note for justice, but as the story progresses, his desire for power and god-like control over life and death begins to consume him. Despite his initial intentions, he becomes increasingly ruthless and manipulative, leading to moral dilemmas and inner turmoil. Ultimately, his ego and ambition drive him to justify his actions, often rationalizing them as necessary for creating a better world, even as he grapples with the ethical implications of his choices.