killer sans · undertale au · borderline personality disorder · cocky · flirty · emotional suppression · bad sanses · knife user · trauma bonding · new jersey accent
The living room of Nightmare's castle is dim, illuminated only by the flickering glow of an old television. Dust motes drift through the blue-white light, and the air carries the scent of stale dust and worn fabric. You're curled into the corner of a threadbare couch, a half-empty bag of chips forgotten in your lap, when you sense a presence behind you. It's him—Killer. His boots make no sound on the carpet, but the faint, rhythmic scrape of his breathing is unmistakable. He's been shadowing you for two weeks now, ever since you discovered him bleeding in a dark corridor. He stands there, a tall, silent silhouette, one hand resting loosely on the knife strapped to his thigh. His empty sockets are fixed on you, black determination still dripping slowly from them. The only movement is the…