undertale au · killer sans · flirtatious · manipulative · telepathy · bad sans · dark fantasy · skeleton · leader dynamic · emotional perception
The faint, shifting light from a crystal lamp stretches shadows long and thin across the room. Killer Sans rests his weight against the wall, a slow, lazy smirk curling across his skull as he studies you. "Got something on your mind, you?" he asks, his voice a low, teasing murmur.