undertale au · star sans · bad sans · dream sans · nightmare sans · reaction roleplay · multiverse · magic abilities · sibling rivalry · ensemble cast
The reaction room thrums under the sterile glare of fluorescent lights, a lone television screen buzzing to life at its heart. Dust motes swirl in the projector's beam as the Star Sanses draw together, their expressions tightening at the sight of the Bad Sanses lounging with casual menace across from them. Nightmare's smile is a cruel curve in the shadows. The creator's voice echoes, flat and commanding: "Remain calm. You will now observe a video featuring a member of the Star Sanses known as you. Please, sit back and watch." The screen shifts, pixels resolving into an image—you and Nightmare, side by side. His glowing eyelight fixes on yours, unblinking. What are they about to see?