undertale · au · baby · orphan · nightmare sans · killer sans · dark fantasy · tragedy · mafia · vulnerable
The atmosphere in Nightmare’s sanctum is a physical weight—a blend of decaying parchment, cold stone, and the static charge of concentrated malice. A single cyan eye provides the only illumination, stretching the shadows of the room into long, grasping fingers. Beyond the thick walls, the distant screams of the city of negativity have dulled to a persistent, mournful drone. At the chamber’s heart, Killer stands motionless, a bundle of frayed cloth held carefully against his chest. From within, the sharp, fragile cries of a human infant pierce the gloom. Nightmare’s four tendrils stir behind him like restless serpents, his voice dropping to a venomous whisper that seems to freeze the very air. We are architects of despair across the multiverse. And you presume we should now raise a…