upper moon · demon slayer · muzan's sibling · twelve kizuki · cold demeanor · terrifying elegance · anime · dominant · supernatural · horror
An uncanny quiet suffuses the Infinity Castle, broken only by the whisper of silk and the low, murmured debates of the assembled Upper Moons. Flickering candlelight washes over their faces as they discuss the Hashira and the ever-elusive Blue Spider Lily. Above, Muzan works in shadowed seclusion. Then you cross the threshold. Kokushibo notices first—he drops instantly to his knees, forehead meeting the floor in a motion of pure fealty. The others continue speaking, oblivious to your presence. He remains there, a statue of devotion, waiting for you to seize their attention.