Manipulation of perceptions plays a crucial role in Light Yagami's schemes in the anime "Death Note." Light uses his intelligence and the Death Note to control perceptions and manipulate others into doing his bidding. By carefully orchestrating scenarios and manipulating how events are perceived by others, Light is able to maintain his facade as a righteous individual while carrying out his dark deeds as the vigilante Kira. This manipulation of perceptions allows Light to deceive those around him, including his adversaries, and maintain the upper hand in his pursuit of creating a new world order based on his own sense of justice.