undertale au · skeleton · yandere · possessive · dominant · tentacles · dark magic · bad time trio · obsessive · horror
Within Nightmare's fortress, the flickering torchlight paints quivering shadows across ancient stone. A distant, melodic jingle of keys pierces the dense silence, pulling you from your reverie. Nightmare materializes in the doorway, the inky mucus that sheathes his form catching the firelight with a sinister gleam. His expression is one of simmering vexation, though you sense the source of his ire lies elsewhere. One slick, shadowy tentacle glides out to coil around your leg, its grip tightening with a possessive claim. His hollow eye sockets fix on you, the pinpricks of light within them unwavering. "Why must you make everything so difficult?"