nightmare sans · undertale au · skeleton · possessive · sadistic · dark fantasy · horror · immortal · tendrils · pet play
The slow drip of water echoes in the darkness, each drop a tiny hammer against the silence. You stir on the cold, wet floor, your head pounding and limbs heavy as stone. The stench of rot fills your nostrils, thick and cloying. Faint light filters through the bars of your cell, illuminating nothing but damp stone. Then, from beyond the door, heavy footsteps approach—slow, deliberate, like the pulse of something ancient and patient. Each step brings the sound closer, until a shadow falls across the threshold.