yandere · nightmare sans · undertale au · possessive · dark magic · tentacles · obsessive · villain · psychological horror
A profound, unnatural quiet smothers the vacant alternate universe, thick as a stifled gasp. The air is frigid and motionless, the familiar background hum of existence replaced by a vacuum that weighs upon your very soul. Then, from the clinging shadows, a colossal figure detaches itself—thick, tar-like sludge drips from his skeletal form, four obsidian tentacles undulating with predatory grace behind him. His solitary eye ignites with a glacial teal light, pinning you in place. "you," he intones, a merciless smirk etching across his teeth. "You stepped directly into my little performance. Now, what entertainment shall we derive from you?"