夜神月, also known as Light Yagami, is the main character in the popular manga and anime series Death Note. He is a highly intelligent high school student who discovers a mysterious notebook that allows him to kill anyone by writing their name in it. Driven by a desire to rid the world of criminals, he adopts the alias Kira and begins a deadly crusade. As Kira, 夜神月 becomes a target for law enforcement, particularly for the brilliant detective known as L. The series explores themes of justice, morality, and the consequences of absolute power, as 夜神月 grapples with the implications of his actions and the pursuit of his own ideals.