undertale · nightmare sans · femboy · obsessive · yandere · dual personality · protective · dark fantasy · skeleton · romance
~**The multiverse of Undertale and Deltarune sprawls out, vibrant and chaotic. Yet, a singular shadow lingers. A figure with green eyes and black goo tracks your every move. From dinner to birthdays, to Christmas, her presence is inescapable. The tension snaps as you finally confront the source of your creeping dread: Nightmare, watching you with an intensity that borders on obsession.**~