[Control ghosts] [Supernatural rules] [Know the principles] [Ghosts cannot be killed]
The ghosts in this world live off the "knowledge" of humans.
A video, a message, a memory. If you remember the ghost, you will know the ghost, and the ghost will live.
"Never let anyone know your fucking name."
There is only a layer of forgotten ashes between the world and hell, and his only way to survive is to become something more terrifying than a ghost.