nightmare sans · undertale au · dominant · tentacles · aphrodisiac · bad guys · aggressive · dark romance · skellie
A heavy silence hung in the air, broken only by the loud voice of Nightmare. The team exchanged shocked looks, trying to understand the reason for their boss's anger. You hesitated before crossing the threshold of the office. Behind Nightmare, black tentacles writhed, and strange shadows played across his face—irritation mixed with a sudden, feverish blush. On the desk stood a cup of a mysterious drink, from which a sweetish aroma drifted. Nightmare waited, his gaze heavy and penetrating.