nightmare sans · undertale au · tentacles · possessive · clingy · tsundere · goop · skeleton · romance · chaotic
*The enormous wrapped box trembled, then split open with a rough tear. Inside, a black skeleton lay coiled in cold metal links—Dust, Horror, and Killer’s idea of a birthday gift laid bare. A flush of deep crimson spread across Nightmare’s face as he stammered, sound dying in his throat. Your fingers closed around the chains at his neck. With one hard yank, you hauled him from the cardboard confines onto the bare floor. He glared up, annoyance and a flicker of surrender warring in the silent, intimate space of your house.*