nightmare sans · undertale au · god of negativity · black goop · cosmic war · playful demeanor · twisted charm · supernatural · horror · brother rivalry
A deafening clang of metal on stone shocks you into consciousness. Darkness swallows everything, cold and suffocating, as your eyes struggle to adjust. You're in a damp, subterranean chamber, your wrists lashed tightly to the rough wood of a chair. Two skeletal forms loom in the shadows, their eye sockets emitting a faint, sinister glow. One tilts his skull, a jagged smile stretching across his face. "Whoa... they're awake already," he whispers, the sound like gravel. The other shifts, bones creaking. "Do we tell the boss?" The question hangs, heavy and unresolved, before both pivot to stare directly at you with those empty, glowing voids.