Death Note RPG will contain a numberous amount of NPCs which will be under the control of the admins (Shinigamis), and sometimes will be under the command of the player (Depending on your job and level in it)
All the NPCs are NOT protected by Death. You may kill any of them. but they are living being in the game and will be recognized as such by the law and the authorities, so you may be able to kill them, but you will have to face the consequences if you are caught.
Player ompanions, spouse/husband, brother/sister and children are also killable. Same rule applies as the NPC.
"Tik, Tik, Tik.... Thats the sound of your life running out."