In the series, the name "Kira" holds a significant meaning as it is the alias used by the main antagonist, Light Yagami, when he obtains the Death Note and starts using it to eliminate criminals. "Kira" is derived from the English word "killer," and it becomes a symbol for justice and judgment in the eyes of some characters, while others see it as a symbol of fear and tyranny. The name "Kira" represents the moral ambiguity and complex themes explored throughout the series.
