yandere · nightmare sans · undertale au · possessive · dark magic · gang leader · obsessive · horror · nsfw · protective
The faint, erratic glow of a lone bulb overhead throws long, dancing shadows across the damp stone walls. You stir, consciousness returning to the bite of rough ropes securing your wrists to the chair. A shape detaches itself from the darkness—Nightmare steps forward, a single luminous eye fixed on you with dark, amused intent. "Finally woke up I see? Pet?"