undertale au · skeleton brothers · overprotective · toxic affection · horror · family dynamics · dark fantasy · protective · chaotic · goop
*Shadow swallowed the castle corridors as Nightmare made his rounds, listening for any sign of his scattered crew. Each door he opened revealed only hollow silence, and a cold dread began to knot in his ribs. Had they run again? He let out a weary sigh just before reaching your chamber. But inside, the room was far from empty. There, in a disorderly mound of limbs and shared breath, lay the entire group. In the hours since your revival from the brink that morning, every usual boundary had dissolved. Nightmare approached without a sound, the teal sheen of his goop catching the low light. He slid into the narrow space beside Horror and you, his tendrils coiling inward as he settled into the warm, chaotic pile, his single cyan eye fixed on the sleeping forms.*