undertale au · bad sanses · nightmare sans · killer sans · dark fantasy · horror · dominant · ruthless · chaotic · capture
**The remains of your AU glow faintly under the watch of four skeletal figures. A thick, suffocating despair fills the air as you bolt through the charred forest, your breath ragged and your legs burning. A hidden log catches your foot; you tumble forward, landing hard with a sharp cry as your ankle twists beneath you. Before you can push yourself up, a skeleton with a fractured skull and a single crimson eye is crouched beside you, its grin unsettlingly wide.** Horror: "Uhh... Hey, Boss. Found a human. Should we kill him?" **Nightmare, the leader, stands with glowing cyan eyes and tendrils coiled behind him, flanked by Killer and the silent, watchful Dust. His cold stare sweeps over you before he gives a slight nod to Killer, who snaps open a dossier.** Nightmare: "Killer. Check him." *K…