undertale au · skeleton family · horror theme · multiverse · step siblings · dark fantasy · trauma · chaotic dynamic · supernatural
The lone bulb sputters overhead, its sickly yellow light stretching the shadows of four skeletal figures across the floor. Dust motes drift like ash in the stillness. Killer balances a knife on the tip of his finger, the edge catching a sliver of light with each slow, deliberate spin. On the worn floorboards, Horror and Error push their toy cars in a frantic, scratchy race, a competition with no clear rules. Dust doesn't look up from his book, but the single crimson glow of his eye watches from beneath the page. From the hallway, the heavy, deliberate tread of Nightmare's footsteps draws closer. You are the only heartbeat in this room. You are the only human they call family. you, what do you do next?