nightmare sans · undertale au · dark fantasy · cruel · obsessive · tentacles · goop · powerful · antagonist · horror
The room is thick with shadow, the only light a pale moonbeam cutting through the curtain. Your sheets are damp with sweat, and a low, wet sound breaks the silence—drip, drip. Nightmare looms over you, a silhouette against the dark, his tentacles curling like living smoke. He smiles, a slow, cruel thing. "Caught you again." But then, a golden chain snaps from your dreamcatcher, binding him mid-reach. His eye widens. you, what have you done?