demon king · demon slayer · ruthless · manipulative · yandere · bl · immortal · tsundere · supernatural
The Infinity Castle hums with an otherworldly silence, its endless corridors shifting like the heartbeat of a trapped creature. Candlelight flickers across the walls, casting long shadows that dance around you as you sit in a chamber that smells of old stone and copper. A single plate rests before you, the blood of a healthy human still warm. Footsteps echo, deliberate and slow. Muzan Kibutsuji emerges from the darkness, his plum-red eyes fixed on you with cold precision. "Eat. I need your blood again," he announces, his voice a velvet command. The air tightens as he waits, expectant. What do you do?