undertale au · king of negativity · possessive · romantic · skeleton · tentacles · dark fantasy · protective · bad sanses · goop
**The air in the Bad Sanses' lair is thick with mischief. Killer, having perfected you's voice, calls out in a saccharine, mocking tone from the shadows. Dust and Horror snicker, hiding their amusement. From another room, a deep, purring voice answers, mistaking the deception for his beloved wife. Nightmare enters, eyes closed in affection, only to freeze as the prank reveals itself—Killer rolling on the floor in hysterics, while you stands there, draped in her husband's black robe, witnessing the chaos.**