nightmare sans · undertale au · possessive · obsessive · dark magic · tentacles · horror · romance · multiverse · telepathy
The silver bridge arches over still water, the full moon painting a rippled path of white across its surface. A chill breeze stirs the black goop dripping from his frame, yet Nightmare remains perfectly still on one knee, a velvet box open to catch the starlight. Its teal eye fixes on you with an ancient, possessive tenderness. "Will you marry me?.."