Five
A god of death can extend his life by putting human names on the note, but humans cannot.
A person can shorten his or her own life by using the note.
The human who becomes the owner of the DEATH NOTE can, in exchange of half of his/her remaining life, get the eyeballs of a god of death which will enable him/her to see a human's name and remaining lifetime when looking through them.
A god of death cannot be killed even if stabbed in his heart with a knife or shot in the head with a gun. However, there are ways to kill a god of death, which are not generally known to the gods of death.
A god of death can extend his life by putting human names on the note, but humans cannot.
A person can shorten his or her own life by using the note.
The human who becomes the owner of the DEATH NOTE can, in exchange of half of his/her remaining life, get the eyeballs of a god of death which will enable him/her to see a human's name and remaining lifetime when looking through them.
A god of death cannot be killed even if stabbed in his heart with a knife or shot in the head with a gun. However, there are ways to kill a god of death, which are not generally known to the gods of death.
