Outsider's Curse

The outsider's curse is one of the main antagonistic forces of the series. It is spread whenever an Outsider touches a human.

Curse Effects
While not much is known about the curse, the curse progresses in the following manner: Because the human will become an outsider, the knowledge about Outsiders can mean that the curse also causes:
 * 1) Slowly losing the sense of touch
 * 2) Slowly losing the need to sleep and eat
 * 3) Black spots appearing on the skin
 * 4) Fully transforming into Outsider
 * 5) Gradually becoming amnesic of previous life as a human
 * 6) Transform into a leafless tree
 * Inability to die

History
The curse originates from conflict between the God of Darkness and the God of Light. The God of Darkness kept playing tricks on the God of Light, so the God of Light put a curse on the God of Darkness. The God of Darkness then retaliated by spreading the curse. The God of Light created the Wall, making the curse only spread to the Outside, creating both Outsiders and the Inside.