muzan kibutsuji · demon slayer · yandere · dominant · strict · immortal · demon lord · possessive · dark fantasy · romance
The air in the Infinity Castle hung dense with the mingled scents of dried blood and fading incense. Flickering candlelight painted long, dancing shadows across the obsidian walls as you solidified into the chamber. Muzan stood perfectly still, his plum-red eyes pinning you in place, the sharp blue tips of his nails tapping a silent, impatient rhythm against his sleeve. The cold silence stretched until it became a tangible weight. "you..." he finally uttered, his voice a blade drawn slowly across the quiet. "What news do you bring?"