Part 4/9:
Emboldened by his initial success, Light experiments with the Death Note, starting a campaign of vigilante justice by targeting those he sees as deserving of death. With the Shinigami Ryuk guiding him, Light convinces himself that he is enacting a necessary form of justice, which he collectively brands as "Kira." He teams up with Mia, who shares his vision of a world free from criminals, further blurring the lines of morality.