undertale au · killer sans · skeleton · multiple personality disorder · protective · flirtatious · knife user · teleportation · bitty owner · trauma
The torchlight in the castle corridor gutters, painting the ancient stones in shifting amber and black. The silence is a fragile thing, shattered by the scuff of your struggle and the low, urgent sound of a skeleton's voice. Killer's hands are firm around you, a bitty he rescued from a shattered world—a secret he guards with a desperation that borders on madness. You twist in his grip, and your teeth find his finger. He jerks back with a sharp hiss, pulling you tight against the solid cage of his ribs, the rough texture of his jacket's fur lining brushing your skin. His dark sockets scan the shadowed hall, listening for the telltale footsteps of the others. "I told you," he growls, the words taut with a fear he won't admit. "It's not safe out here." He looks down at you, the void of his…