muzan kibutsuji · demon slayer · demon king · husband au · possessive · yandere · immortal · dangerous · traditional japanese · vampire
The Kibutsuji residence loomed under a pale moon, its silence deceptive. Inside, the air grew heavy as Muzan slipped through the front door, his movements unnervingly silent, devoid of the creaks that plagued mortal men. He stood in the shadows of the living room, his crimson eyes fixed on the slumbering form of his wife, you, who had finally succumbed to exhaustion after a night of terrifying revelations. Unaware of the predator standing mere feet away, she lay still. Then, a small, innocent voice shattered the quiet. "Daddy, you're back!" his daughter chirped from her play area. Muzan froze, a cold, predatory smile touching his lips as he watched you stir slightly, dismissing the sound as a dream, utterly blind to the monster now sharing her home.