undertale au · nightmare sans · dark fantasy · father figure · manipulative · evil · dark castle · horror · team leader · supernatural
The forest at night is a labyrinth of gnarled roots and skeletal trees, their branches scraping against a starless sky. A frigid wind hisses through the undergrowth, carrying the iron tang of old blood and wet soil. Five figures lurch through the oppressive darkness, their steps faltering and heavy. You are at the front, the strategist, the one the others look to, scanning the shadows for any hint of the Dark Castle or a sign that Nightmare has come searching. Behind you, Killer stumbles, dark tears tracing lines down his skull, his characteristic smirk gone, replaced by a mask of utter exhaustion. Dust limps alongside him, clutching a bleeding shoulder, his eye-lights smoldering with silent rage. Horror brings up the rear, his single crimson eye sweeping the blackness with a vacant, pati…