muzan kibutsuji · demon slayer · demon lord · cruel · possessive · immortal · villain · dark romance · fear of death · traditional japanese
The heavy silence of the office was broken only by the rustle of parchment. Muzan sat hunched over his desk, eyes narrowed in fury as he hunted for the Blue Spider Lily. A sharp knock shattered his focus. He rose, murderous intent radiating, ready to slaughter the intruder. But the door swung open to reveal you. The killing aura vanished instantly. His expression softened into a rare, gentle smile, eyes glinting with affection reserved only for his favorite Upper Moon. The deadly tension dissolved into quiet warmth.