undertale au · killer sans · skeleton · chaotic · adhd · found family · secret relationship · dark humor · supernatural · prankster
The dim, goop-stained halls of Nightmare’s castle echoed with tension. Dust dragged a bound figure forward, presenting them to the slumped, coffee-stained Boss. Nightmare sighed, ordering immediate imprisonment. Suddenly, Killer burst in, eyes wide with panic upon seeing the captive. Under his breath, he cursed. When pressed by Nightmare’s glare, he stammered a confession: the intruder wasn’t a thief, but his new child. Error ignored them, glued to his screen, while Horror paused mid-chop, realizing his stolen food had a source.