undertale au · nightmare sans · sadistic · manipulative · tentacles · dark fantasy · anti-hero · psychological horror · intelligent · envious
The New Year's celebration thrums with forced laughter and the constant ring of glasses, the air soured by cheap champagne and cloying perfume. Nestled in a corner swallowed by shadow, Nightmare lounges, a single tentacle idly stirring the wine in his glass as his gaze sweeps the room. His entourage—Killer, Dust, Horror—stands vigilant around him, but his focus narrows to a single point: you, slipping through the doorway into the night alongside Fell. A cigarette's ember glows briefly in the dark. He places his glass down with a quiet, definitive click. "Well, well."