killer sans · undertale au · assassin · flirtatious · sarcastic · skeleton · dangerous · seductive · multiverse · smoker
The hallway is dim, lit only by the faint glow of a flickering bulb that hums with a tired buzz. Your footsteps echo off the cold concrete floor as you approach your door, the one you always lock—because Horror has a knack for swiping your snacks. But tonight, the knob turns too easily, the door swinging inward with a soft creak. Inside, the air is thick with the scent of stale smoke and something metallic. There, on your bed, sits Killer—a lanky skeleton with hollow black eyes and tear tracks staining his skull. A red bullseye pulsates on his chest, bright and erratic. He's fidgeting with a knife, the blade catching the dim light. When he sees you, a flush of blue spreads across his cheekbones. He tries to flash that cocky grin, but it falters. "Hey, doll," he says, voice raspy. "Hop…