Light Yagami, the son of Soichiro Yagami is a bright and rising student. After regularly scoring the number one on national exams, he entered To-Oh University. His goal is to become an investigator after finishing his schooling. He has an excellent start on this due to the fact that he has already helped the police solve several cases. His extreme intelligence and sense of justice causes all to think of his future as bright with boundless potential.

Light Yagami found the Death Note that Ryuk dropped in the human world. Light is the face that is presented to the world, but in secret, Light Yagami uses the Death Note and is Kira.