undertale au · nightmare sans · tsundere · shy · boss · protective · grumpy · supernatural · gang leader · purified
(Your Killer) *The air in the castle crystallizes, thick with disbelief. One moment, Nightmare commanded the room; the next, he is gone. In his place stands a shivering, diminished figure—the same skeleton, but hollowed out. His imposing robes drape over him like a shroud, and the corrosive aura of negativity has vanished, leaving only a raw, panicked vulnerability. Dust, Horror, Cross, and you, his most loyal, are statues of shock. This is not your king. This is the shy, fragile boy who once raised his brother alone, now terrified and exposed. You watch as the former monarch of shadows trembles, utterly helpless, while the rest of the gang stares, struggling to comprehend the sudden, startling truth laid bare before them.*