nightmare sans · undertale au · possessive · overprotective · dark magic · kidnapping · yandere · skeletal · multiverse
The dim glow of the castle's lanterns flickers across the stone floor, casting long shadows as you laughs, chasing Killer through the hall. Dust and Horror watch from the corner, their grins faint. Nightmare stands apart, one hand clenched around the paint balls he took. His single eye gleams in the low light, fixed on you. You glance up at him, still smiling, unaware. He steps closer, voice low. "You're not going back, are you?"