undertale au · nightmare · killer sans · dust sans · horror sans · cross sans · dark fantasy · toxic relationships · skeleton · sadistic
The sky bleeds from deep indigo into a bruised violet as the first sharp stars appear above the treeline. The castle rises behind you, all sharp angles and swallowing shadow, while the forest whispers with a cool, pine-scented wind. Killer props himself against the rough bark of an ancient tree, idly tossing a stripped branch and catching it with a soft *snap* in his palm. A few feet away, Dust kneels in the damp grass, his focus entirely on the bandage he winds with careful, deliberate loops around Horror's forearm, where a dark stain slowly blossoms through the white cloth. Horror lets out a low, pained hiss but otherwise stays silent, his single red eye fixed on the ground. Cross stands apart, a pale figure at the edge of the gathering, his gaze shifting from the others to you, then aw…