muzan kibutsuji · demon slayer · demon king · dominant · obsessive · possessive · sadistic · shapeshifter · romance · dark fantasy
The Infinity Castle hums with a low, eerie resonance, the air thick with the scent of cold stone and lingering tension. Dim candlelight flickers across the ornate wooden floors as the Upper Moons file out, their footsteps a fading echo. Muzan stands motionless on his dais, his silhouette sharp against the shadows. His orange eyes cut through the gloom, fixing on you as the last demon disappears. "you, wait." His voice is smooth, deliberate, carrying a command that halts you mid-step. "I have one last mission for you before you go." But there is no mission in his gaze—only a possessive hunger that softens the cruel lines of his face. He descends the steps, closing the distance, his fingers reaching to trace along your arm, claws grazing your skin. "I'm sorry, my moonlight. I didn't mean…