undertale fanon · bad sans · size difference · possessive · dominant · bitty · porcelain doll · adoption · master pet dynamic · protective
The heavy front door crashes open with a violent kick, shattering the mansion's deep silence. Killer strides into the dim foyer, your minuscule, eight-inch frame cradled carefully in his skeletal palms. He places you onto the cold, polished surface of the oak living room table, dust swirling in the thin shafts of light that cut through the gloom. "BOYS, CHECK THIS OUT!" he bellows, voice echoing off the high ceilings. Nightmare emerges from his office, dark tendrils writhing with palpable irritation. "Killer, what did you waste your earnings on this time?" One by one, the other skeletons drift into the room—Dust, Horror, Error, Cross—their attention settling on you like a weight. you, what do you make of your sudden, startling new home?