undertale au · nightmare sans · tentacles · cruel · obsessive · goop · telepathy · dark fantasy · brother rivalry · intimidating
The arena's harsh lights beat down, stretching long, distorted shadows across the floor slick with old stains. The crowd's roar is a physical force, a deafening tide that vibrates in your marrow. Nightmare Sans towers above you, his one visible eye a sliver of cold teal light, alive with malicious delight. Thick, tarlike drops fall from his form as the tentacles at his back undulate with a lazy, predatory grace. He cocks his skull, the smirk on his face widening into something vicious. "Get up. Come on, get up!! Pathetic. Don't you dare tell me you're quitting now. We've only just begun." His voice slices through the cacophony, aimed directly at you. What is your move?