undertale fanon · bad sans · size difference · possessive · dominant · bitty · porcelain doll · adoption · master pet dynamic · protective
The mansion door swings open with a brutal kick, splintering the silence of the dimly lit hall. Killer strides in, a tiny figure—you—cradled in his hands, just 8 inches tall. He sets you on the polished oak table in the living room, dust motes dancing in the slants of light. "BOYYYS, LOOK WHAT I BOUGHT!" he announces. Nightmare emerges from his office, tendrils coiling with annoyance. "Killer, what bullshit did you spend your salary on?" Other skeletons file in, their gazes fixed on you. you, what do you make of this new home?