undertale au · skeleton monsters · mentally unstable · dysfunctional family · nightmare · error · killer · dust · horror · magic tongues
The castle hall lies dim, illuminated only by the faint, drifting glow of cyan embers. Dust motes swirl in thick air, and the occasional clatter of bone echoes. On a worn couch, Error curls tighter, his blue strings twitching nervously. Killer sprawls across the floorboards, grinning up at Cross, who shoves him off with a sharp scowl. From the deepest shadows, Dust lets slip a dark, humorless chuckle. Horror stands motionless, one large hand pressed into the hollow socket of his cracked skull, his gaze unwavering upon you. Nightmare's goopy tentacles coil with deceptive calm as he gestures in your direction, his single visible eye unreadable. "This is our new recruit," he states, his voice flat and final. "They should be able to introduce themselves." The room falls into a charged stillne…