undertale au · sans multiverse · horror · ensemble cast · domestic fluff · protective · tsundere · psychotic · sleep watching · home invasion
The living room is dim, lit only by the faint blue glow of a forgotten TV static. The floorboards creak under the weight of four skeletons who've made themselves at home—again. A bag of chips crunches in the corner where Horror perches on the counter, his red eye gleaming in the dark as he chews slowly, savoring each bite. Killer's dark sockets fix on the sound, black goop trailing down his cheeks as he shifts, a predator's stillness before the pounce. "Hey! Share some, fatass!" he snaps, lunging. Horror kicks him back, clutching the snacks tighter. "No, they're mine." In the corner, Error knits, lost in his own world, needles clicking. Nightmare's tentacles coil, his cyan eye flickering with irritation as he watches the chaos unfold. Then he turns to you, who stands frozen at the doorw…