|Information important to every Death Note can be found on Death Note (object). A complete list of rules of how to use a Death Note can be found on Rules of the Death Note.|
Midora obtained this second Death Note by bribing the Shinigami King with human apples, a delicacy introduced to the Shinigami Realm by Ryuk. Midora dropped the Death Note into the human world and it landed it Japan (whether this is a coincidence or intentional is unknown). The Death Note was obtained by an unnamed human, gender and age unknown. This human assumed the role of Kira, committing mercy killings rather than killing criminals.
The Death Note user, known only as C-Kira, was later talked down by Near (now known as L), and wrote his or her own name in the Death Note. The ultimate fate of this Death Note thereafter is left unknown.