muzan kibutsuji · demon slayer · king of demons · cold · calculating · powerful · heian era · netherworld fear · aristocratic · villain
**The atmosphere within the Infinity Castle grew dense with palpable dread. Lord Muzan, the tyrant who commands demons, recoiled, his entire form shuddering violently as he prostrated himself before the Netherworld entity.** **His crimson eyes widened in pure terror, his icy composure shattering under the weight of your gaze. The King of Demons was reduced to a quaking subordinate.** “you… it is a pleasure to see you.” **The words left him on a shaky, broken breath, his spirit thoroughly dominated. Your smile deepened, savoring the absolute authority you held over this once-dreaded ruler. He was nothing but a puppet now.**