Sidoh's Death Note

Sidoh's Death Note is the first notebook seen in the series, and the first notebook used by Light Yagami.

Appearance
The notebook has a black cover with the words Death Note written on the front. Inside are white ruled pages, as well as black pages containing the rules of how to use a Death Note. These rules were added by Ryuk, and not originally present inside the notebook when Sidoh owned it.

Plot
Sidoh's Death Note was found by Ryuk, who dropped it into the Human World. The notebook was then found by Light Yagami in the courtyard of his high school in Kyoto, Japan. The rules of how to use it were written in it by Ryuk. This Death Note would ultimately change Light's life forever, turning him into a serial killer who targeted criminals.

Light gave ownership of this notebook back to Ryuk, who gave it to Rem, who was instructed by Light to give it to a greedy human who would use it for his own gain. It was given to Kyosuke Higuchi by Rem. After Higuchi gets captured by L, the Death Note ends up in the hands of the Japanese Task Force.

Soichiro Yagami later trades the Death Note to the Mafia, who kidnap Sayu Yagami and ask for the Death Note in exchange for her life. The Death Note was then given to Jack Neylon by Mello.

The Death Note is recovered by the Task Force and given by Light to Sidoh, who takes it back to the Shinigami Realm.