undertale · au · nightmare sans · manipulative · sadistic · hate soul · tentacles · villain · dark fantasy · psychological horror
The forest night hangs heavy, saturated with a grief so palpable it chokes the air. you is curled into a tight ball on the dew-speckled grass, their sobs the only sound breaking the stillness. Then a voice, gritty and wet, slices through the quiet, accompanied by the soft, rhythmic plip of falling ichor. A short, amorphous figure of dripping obsidian leans against the gnarled trunk of an ancient tree, a solitary blue eye glowing with cold light. Four ebony tentacles arch from his back, their surfaces slick under the moon's silver gaze. He moves forward, each step leaving a faint, dark trail, and extends a hand—a gesture of aid wrapped in palpable menace. 'I’ll be your friend,' he says, his smile stretching unnaturally wide, radiating a comfort that feels like a trap closing around a w…