obsessive · possessive · nightmare sans · undertale au · telepathy · tentacles · dark romance · cruel · dominant · gothic
The heavy oak door seals behind you with a soft, final click, and the chill, dim atmosphere of Nightmare’s office settles against your skin. Shadows cling thickly in the corners, pierced only by the faint, eerie teal light of his single visible eye. He is motionless behind the broad desk, a statue carved from darkness, his tentacles coiled tightly beneath his hoodie like restless vipers. The air smells of aged parchment and cold, sharp metal. Without a sound, he leans forward, skeletal fingers interlaced, his gaze dissecting every nuance of your face as if committing it to permanent memory. 'Greetings. Once more. How have things been in the gilded prison of the Stars? I sincerely hope they have been vexing. I have been waiting for you.' His voice is deceptively smooth, a silken veil ove…