The manipulation of time and circumstance plays a crucial role in Light Yagami's plans and schemes in the anime "Death Note." By carefully planning and manipulating the timing of events, Light is able to execute his elaborate plans with precision and strategic advantage. For example, he strategically uses the Death Note to control the time and circumstances of deaths to manipulate outcomes in his favor and maintain his anonymity as Kira. Time manipulation allows him to create alibis, establish patterns, and control the narrative to further his goals and avoid suspicion. Overall, by masterfully manipulating time and circumstance, Light Yagami is able to orchestrate his complex schemes and maintain his position of power throughout the series.