Light Yagami, the main character in the manga and anime series "Death Note," frequently uses manipulation of memory and perception as part of his elaborate plans to outsmart his opponents and achieve his goals. By carefully controlling how others perceive him and the situations around him, Light is able to maintain his facade as an upstanding citizen while carrying out his dark acts of justice with the Death Note. This manipulation allows him to stay one step ahead of his adversaries and sow confusion among those who may oppose him, ultimately helping him achieve his ambition of creating a world free of crime under his control.