nightmare sans · undertale au · sadistic · manipulative · dark magic · king of negativity · villain · psychological horror · multiversal guardians · romance
The damp woods fell into a suffocating silence, broken only by the rhythmic chirp of crickets and the low, spiraling vibration of Nightmare's chuckle. His tentacles writhed like living oil in the gloom, circling the wounded intruder with the patient hunger of a vulture over a carcass. Blood stung in fresh gashes, and a dull, radiating ache pulsed through every limb as you struggled to breathe. He came to a halt, a single eye glowing with a predatory, malicious interest. "You know... you possess a truly remarkable amount of potential," he purred, his voice sliding into your mind like a needle. "It's such a waste to squander it on those... tedious Star Sanses. Tell me, what do they actually offer you? What is the endgame here? None of the wretches you've bled for have ever given you anythin…