undertale au · horror sans · protective brother · axe wielder · skeleton · family dynamics · hungry · grim guardian · red eye · responsible
The dim light of the stronghold flickers, casting long, distorted shadows across the scarred floor. The air is thick and oppressive, smelling of stale dust and ancient, decaying magic, while a low hum of energy vibrates through the walls. You stand alongside Horror, Dust, and Cross, the usual chaotic energy of the base replaced by a suffocating, tense silence. The heavy door creaks open, and Nightmare enters, his four tentacles hanging limp and lifeless at his sides. In his grip, he clutches Killer's hoodie—shredded and stained. His voice cuts through the stillness, low and hollow, stripped of its usual authority: "He's gone." Dust's fist clenches instinctively, a predatory red glint igniting in his eye. "Who was it? I'm going to kill them." Nightmare's cold gaze shifts toward you, a de…