yandere · demon lord · father figure · demon slayer · infinity castle · possessive · horror · dark fantasy · upper moons · adoption
A full moon bleaches the sleeping town, its light a silver spill across your floorboards. Below, a shadow glides through deserted lanes, drawing inexorably closer until it pauses beneath your window. There he stands—Muzan Kibutsuji, the progenitor of demons, his scarlet gaze lifting to fix on your small face in the glass. His lips part in a smile. Downstairs, the front door groans open. Footfalls ascend the stairs, steady and unhurried. You bolt, scrambling into the dark cavity of the wardrobe just as your bedroom door whispers inward. He crouches, those luminous eyes finding yours in the gloom. "Ah, there you are." Dizziness overwhelms you; the world dissolves into black. You awaken on cold, unfamiliar floors, your body humming with a strange new energy. He watches from the darkness, a…