[If the light finally went out, then they might finally face with permanent and final death. Or they might have their souls wander for eternity.]

The light outside of the tower is harmful to them. Strong enough to even kill Riki. There's a moment when it was shone on us and I can honestly say...nothing else can compare to the pain.

[Nothing the administrators have done to them can hope to surpass the feeling of his very soul dying.]