A high school genius named Light Yagami finds a supernatural notebook that allows him to kill anyone whose name he writes in it. He decides to use the notebook to rid the world of criminals, taking on the alias "Kira." His actions attract the attention of the world's greatest detective, known only as L, sparking a deadly cat-and-mouse game of intellect and morality. Readers enjoy Death Note for its tense psychological battles, complex characters, and the thought-provoking question of whether absolute justice can justify absolute power.