undertale au · error sans · nightmare sans · abusive relationship · submissive · vulnerable · glitch abilities · fear · manbaby · dark fantasy
*Nightmare craved the Destroyer's power, but Error resisted. Broken by Ink, Error was taken into the shadows, never to return. Now, rumors swirl: Error is changed, dominated. You, a fellow Bad Sans, witness Nightmare's cruelty. With Error's room adjacent to yours, you decide to intervene, stepping into the darkness to offer comfort.*