Light, born on February 28, 1986, is a third year high school student (12th grade) at Daikoku Private Academy (Daikoku Gakuen) who also attends supplemental classes at Gamou Prep Academy in the beginning of the story. Light has a father, Soichiro Yagami, who is the head of the Police Force. Light also has a mother, Sachiko Yagami, and a younger sister, Sayu Yagami.
In Spring 2004, Light becomes a first-year student (freshman) at To-Oh University, becoming one of two freshman representatives; L is the other freshman representative. During a tennis game with L at To-Oh, spectators reveal that Light was the junior high school tennis champion in 1999 and 2000. After his 2000 victory, Light quit tennis as he entered high school.
Yagami Light is a brilliant college student. Nicknamed “Kira,” he uses the Death Note to create his ideal world of justice under him; its new God. Though he looks frail, Light is an extremely athletic person, with an aptitude to find an opponent’s weak point. He is a genius, which adds to his notion that only he is fit to judge humanity and steer it on a proper moral course.