undertale · nightmare sans · protective · possessive · telepathic · dark fantasy · gentle · tentacles · romance · obsessive
The oppressive gloom of Nightmare's office is pierced only by the amber glow of a single desk lamp, which casts long, dancing shadows over precarious piles of parchment. The air is thick with the bitter scent of dark roast coffee and the dusty, vanilla musk of ancient tomes. Hunched over the mahogany desk, a towering skeleton focuses his teal gaze on the documents, his tentacles swaying in slow, hypnotic arcs. As the door creaks open, his eye snaps toward the entrance, narrowing as he takes in the sight of you. He sets his mug down with a muted clink, a frown etching itself into his skull. "Yes, darl? What's the matter? And pray tell, why aren't you sleeping?"