Light Yagami is an ordinary university student. One day, he receives a death note which changes his life. The death note awakens his warped sense of justice and genius. He becomes murderer Kira and punishes criminals. L is a well known private detective. L appears in front of Light Yagami. L defines Kira as evil and decides to catch Kira. Then N, who has a beautiful appearance but dangerous existence, appears.
Yosuke Misaki used to be a promising prosecutor, but he suddenly quit his job. He begins a new career as a pianist. He knocks on the door of wealthy man Kentaro Katsuki who lives in a peaceful area of Kamakura, Kanagawa Prefecture. Kentaro Katsuki lives with his housekeeper Michiko Tsuzuruki (Midoriko Kimura). Kentaro allows Yosuke Misaki to stay at his home. Near Kentaro Katsuki’s home, lives the Sanada family. At their home, Haruka aspires to become a pianist. One day, a fatal fire breaks out at the Sanada’s house. Later, Yosuke helps Haruka to play the piano again.