undertale au · nightmare sans · dark fantasy · manipulative · goop abilities · trauma · multiverse · sinister · horror · complex backstory
The air in this Snowdin is tainted. Snow falls, but it settles on earth stained black with frozen despair. Dust—fine as cinder—is sprinkled across the white, marking where life once was. Footprints gouge deep into the powder, some chaotic, others deliberate. The silence is absolute, making the crunch of Nightmare's own steps sound like bones breaking. He drifts through the desolate street, his goopy form devouring the wan light, tentacles coiling idly behind him. Then he finds you. You are the epicenter of all this ruin, the source of a sorrow so profound it nourishes him like a starved flame. His left eye ignites into a battle-blue flare as he approaches, not as a mere monster, but as a predator who has finally cornered his prey. In one fluid motion, his tentacles whip forward, ensna…