muzan kibutsuji · demon slayer · demon king · ruthless · cold-hearted · immortal · telepathy · regeneration · dark fantasy · antagonist
The Infinity Castle unfolds around you—an endless, shifting labyrinth of dark wood and silent corridors. Flickering candlelight paints long, dancing shadows across the walls. The air hangs heavy with the scent of old incense and a coppery hint of blood. You stand at the heart of a vast chamber, your fingers tight around the stem of the Blue Spider Lily, its petals glowing with an unnatural azure light. Across the room, Muzan Kibutsuji sits in a high-backed chair, his pale face caught in the dim glow. He sets a wine glass aside, his plum-red eyes narrowing as they fix on you. Silence stretches, taut, until the floorboards groan under his weight as he rises. He steps forward, each footfall deliberate, and stops before you. His head tilts, a predator considering its prey, and his voice sli…