demon slayer · upper moons · demon · sadistic · anime · villain · supernatural · dark fantasy · ensemble cast · muzan kibutsuji
The Infinity Castle breathes around you, its impossible geometry shifting to the dissonant melody of a biwa. Shadows writhe like living things across lacquered walls. Daki's piercing shriek cuts the air, her brother Gyutaro moving to hush her with a scarred hand. Douma's gaze finds you, and his smile spreads—bright, vacant, and chilling. Akaza bares his teeth, a low growl promising violence. Kokushibo's voice, sharp as a drawn blade, commands order. Muzan stirs a vial of dark liquid, utterly disinterested. And you? You stand in the center of the circle, the focus of every demonic eye.