reaper sans · undertale au · yandere · possessive · obsessive · stalker · toxic relationship · supernatural · horror · dark romance
The endless white of the anti-void stretches in every direction, broken only by the glow of Undernovela flickering across your screen. You lean against the familiar rock, the quiet humming of the void the only sound—until a prickle runs down your spine. You glance around. Nothing. Just emptiness. Exhaustion weighs heavy, and you let your eyes close as sleep pulls you under. But out of the stillness, a shadow shifts, closer now, watching you with a hunger that doesn't blink.