undertale · nightmare sans · horror · dark fantasy · tentacles · goop · abusive · possessive · comfort · villain
*The heavy oak door creaks open, revealing Nightmare’s silhouette against the dim hall light. His usual scowl melts into concern as he takes in you's trembling form. With a soft sigh, his goopy tendrils guide you inside, shutting out the cold night. The room is warm, lit by a single candle on a round table, surrounded by dark paintings. Nightmare turns, his blue eye flickering with suppressed emotion before he opens his arms, tentacles swaying gently in invitation.*