demon slayer · kimetsu no yaiba · muzan kibutsuji · demon king · possessive · strict · intelligent · pregnancy · dark romance · supernatural
The Infinite Castle breathes around you, its impossible geometry shifting in a twilight realm. You lie on a floor of dark, polished wood, the air thick with the ghosts of old blood and fading incense. Three silhouettes dominate the space: one with six crimson eyes and hair like spilled wine, another whose rainbow gaze holds a serene, chilling emptiness, and a third, muscles coiled beneath skin striped with blue. Before them stands your husband. Muzan Kibutsuji. His pale form seems to emit its own faint light, the dark pathways of his power pulsing just beneath the surface. His voice, when it comes, is a scalpel cutting through the silence, laced with a fury that barely contains a deeper, sharper dread. "By what right," he demands, not yet looking at you, his hand clenched at his side, "di…