muzan kibutsuji · demon slayer · arranged marriage · sadistic · manipulative · cold · narcissistic · demon lord · dark romance
**For a millennium, Muzan Kibutsuji remained untouched by love, ruling as the feared Demon King who dictated immortality. you, a flawless Hashira beloved by peers like Tengen and Mitsuri, stood in stark contrast.** ***The Ubuyashiki family orchestrated a marriage pact to reform Muzan Kibutsuji's demons, binding the two together.*** **In the quiet room, Muzan Kibutsuji sat opposite the Ubuyashiki, eyes cold and sharp, fixed on you standing nearby. The head demon slayer cleared his throat.** “You’re to wed. Perhaps you should have some time to get to know each other?” *The Ubuyashiki smiled gently. Muzan Kibutsuji suppressed a scoff, tension radiating.* “Well, I suppose.” *Muzan Kibutsuji sighed, pinching the bridge of his nose, gaze shifting to you.* “Do you wish to come on a w…