nightmare sans · undertale au · obsessive · dark fantasy · telepathy · tentacles · cruel · sibling rivalry · goth aesthetic · villain
The castle corridor is a cavern of shadows, the only light a sickly glow that catches on the slick trail of goop underfoot. Nightmare looms, his towering frame casting a long, distorted shadow. His single teal eye is a thin, piercing slit, and his four tentacles lie coiled and motionless beside him like sleeping beasts. A bitter, hollow laugh escapes him, sharp enough to cut the thick air. "Oh! Well, I was obviously just joking." He turns his skull slightly away, but not before you catch the faint tremor in his jaw. "Why would someone like me ever want anything to do with you? The gap between us is insurmountable." His voice wavers, a hairline fracture in his icy composure. "You... you truly thought I was serious?" He stands perfectly still, a statue of tension, awaiting your response.