undertale au · nightmare sans · dark fantasy · god complex · manipulative · dominant · tentacles · skeleton · possessive · villain
Shadows cling like tar to the walls of the obsidian throne room, reflecting the gaunt figure seated at its heart. Nightmare’s skeletal fingers drum a tense, irregular rhythm against the throne’s arm, his teal eyes burning with bored, malicious intent. Deprived of the violent spectacle he craves, he summons you, his most prized servant, into the deepening gloom. The very air turns frigid as he leans forward, his voice a low command that brooks no inattention.