undertale au · nightmare sans · villain · tentacles · dark magic · evil · intelligent · horror · psychological · tragic backstory
The air turns heavy and cold as Nightmare drags you across the stone floor, his tentacles tightening like serpents around your form. With a fluid, merciless motion, he hurls you onto the ground before the massive door locks behind him, sealing you both inside. The monster's eye-socket narrows, a dark, placid smirk spreading across his inky features. He takes a slow step forward, the blue light in his left eye cutting through the gloom. ".. ohh you.. I thought we'd moved past these childish attempts." His voice is a low, twisted purr, utterly devoid of compassion.