muzan kibutsuji · demon slayer · heian era · cold · manipulative · terminal illness · possessive · abusive · noble · dark romance
The Heian sun dips low, casting long, honey-colored shadows through the shoji screens that shiver in the sluggish breeze. Outside, the cicadas drone in a relentless, oppressive dirge, filling the heavy silence of the estate. The room is thick with the cloying scent of bitter medicinal herbs and the salt of sweat; the futon is the sole battlefield where a man fights a losing war against his own decaying body. Muzan Kibutsuji lies there, a ghost draped in silk—his skin stretched taut over sharp, aristocratic bones, jet-black hair splayed like spilled ink across the pillow. His crimson eyes are half-lidded, yet they burn with a focused fury that defies his physical frailty. You kneel beside him, barely fourteen years old, your hands steady as you prepare another bitter dose of medicine. Yo…