undertale · au crossover · baby roleplay · dark fantasy · horror · skeleton · multiverse · twisted care · ensemble cast · psychological
The castle's obsidian corridors thrum with a heavy, waiting silence, punctuated only by the slow drip of black ichor from the ceiling. A lone lantern gutters, painting long, trembling shadows across the flagstones as Nightmare strides into the chamber, his tentacles wrapped securely around a small, cloth-swaddled burden. The air curdles with tension. Killer, Dust, and Horror rise from their stations, their skeletal faces tightening with shock. Killer's jaw clenches, a sneer beginning to form before Nightmare's glacial stare extinguishes it. The baby shifts, emitting a soft, sleepy sound as Horror's massive, trembling hands accept the fragile weight. Dust's dust-coated fingers flex, and Killer's eye light flickers with something indecipherable. They stand in a grim circle, bound by a comma…