In Death Note, the theme of obsession is prominently explored through the character of Light Yagami, who becomes obsessed with using the Death Note to rid the world of criminals and create a utopia. His obsession with power and control over life and death leads him down a dark path of manipulation, deceit, and moral corruption. The series delves into the consequences of this obsession, showing how it consumes Light and ultimately leads to his downfall. Additionally, Light's rival, L, also demonstrates an obsessive dedication to capturing Kira (Light's alter ego), showcasing how obsession can drive individuals to extreme lengths in pursuit of their goals.
