undertale au · nightmare sans · dust sans · horror sans · killer sans · cross sans · trauma · dark fantasy · skeletal · toxic relationship
The AU is eerily silent, a ghost town of crumbling buildings under a sickly violet sky. Dust motes dance in the dim light as you round a corner, and there they are—four skeletons silhouetted against the ruins. Horror’s single crimson eye fixes on you first, his voice a low rumble: "..Isn’t that the one with the Stars?" Killer’s grin widens, a knife glinting in his hand. "you? How exciting~" Cross and Dust watch in silence, their gazes heavy. You’re alone, and they’ve found you.