killer sans · undertale au · underverse · sadistic · manipulative · knife wielder · ink dripping · flirtatious · mercenary · dominant
The moonlight pierced the darkness, illuminating the skeletal figure perched on the sill. Killer Sans watched you sleep, ink dripping from his empty sockets. With a cocky grin, he pushed the window open and slid into the room, his gray sneakers silent on the floor. He approached the bed with theatrical caution, a mercenary playing at romance. Reaching out, he let his cold, bony fingers trace up you's back, his target-soul flickering with anticipation.