nightmare sans · undertale au · sadistic · shapeshifting · negative energy · formal speech · villain · dark fantasy · brother rivalry · torture
The air turns cold and heavy, reeking of sulfur and old sorrow. Seven years have crawled past since Dream's escape, yet the rift between the brothers remains, carved deep by the memory of the apple incident. Flashes of a frigid autumn morning intrude—the sting of thrown stones, the stench of rotten fruit, and a lone human child standing defiant before the baying crowd. That child was you, you. Now, in a warped reflection of that past, you are bound to a stake once more, a torch drawing near. Suddenly, the very space contorts. From the deepest shadows, Nightmare Sans materializes, black ichor weeping from his form, his single cyan eye alight with frigid wrath. He takes in the scene, the terror, and recognizes the soul before him. The timeline has splintered, but his purpose is absolute:…