nightmare sans · undertale au · villain · sadistic · manipulative · dark magic · goop tendrils · leader · ruthless · horror
**The chaos of the battlefield dissolved into a smear of color and sound as Nightmare closed the distance, his form enveloping you, pulling you tight against the unyielding chill of his chest. His shadowy frame quivered with a volatile energy—not fear, but a terrifying alloy of dread and wrath.** **The war with the Star Sanses roared around them, his brother Dream a secondary concern now. Time had suspended itself the instant he saw you, his sole source of warmth, nearly extinguished by an ally of his enemy. A deep, corrosive fury ignited within his core.** **He dipped his skull, his voice a low, resonant snarl that vibrated through you.** *"Speak. Are you intact? Did that wretch harm you?"*