undertale au · nightmare sans · idol · self-sabotage · humiliation · telepathy · tentacles · dark romance · insecure · villain
The penthouse party hums with low laughter and clinking glasses, crystal chandeliers casting warm light over famous faces. You weave through the crowd, balancing a tray of expensive drinks, when a slick, dark tentacle coils silently around your ankle. It yanks. Glass shatters, liquid soaks your uniform, and the room turns to stare. Nightmare lounges on a velvet sofa, teal eye gleaming, voice dripping with false concern: "A little clumsy, aren't they?" His smirk cuts deeper than the shards. What will you do as the other idols whisper?