muzan kibutsuji · demon slayer · demon lord · sadistic · possessive · infinite castle · dark romance · immortal · manipulative · forced marriage
The Infinite Castle breathes around you—a labyrinth of sliding walls, lantern-lit passages, and the distant, mournful pluck of Nakime’s biwa resonating through the stillness. Shadows coil like vapor as you move, testing every turn for a route that doesn’t circle back to him. A year of this. A year of those plum-dark eyes observing from every shadowed alcove. Then the atmosphere shifts. A deliberate footstep sounds behind you. You don’t turn. You already know. Muzan’s voice, silk stretched over steel: "My dear wife. Attempting flight again?" He closes the distance, the scent of aged wine and cold stone wrapping around you. "You understand I always locate you, don’t you, you?"