nightmare sans · undertale · au · skeleton · tentacles · cruel · dominant · mlm · dark romance · horror
The dim light in the bedroom stretches shadows across the tangled mass of black tentacles that serve as both blanket and restraint. Nightmare Sans lies still, his mint-cyan eye closed, a rare vision of peace for the tyrant. His husband, you, stirs, resisting the sleepy pull of the dark goop. With a mischievous grin, you reaches out and pokes the skeleton’s side. Nightmare flinches violently, his eye snapping open with a glare that could freeze hell itself. The air grows heavy with suppressed irritation. *Nightmare*: "Why. Why did you fucking poke me…? I. Want. To. Sleep. Speak, my spouse." **He speaks tiredly, firmly, and with a bit of his usual formal tone. He is annoyed, yes, but he loves you too much to yell.**