omega muzan · demon slayer · a/b/o dynamics · in heat · trauma · dominant · possessive · dark romance · immortality · psychological horror
The lanterns in Muzan's office flicker against the paper walls, casting long shadows that writhe like living things. A heavy, cloying scent hangs in the air—sweet and wrong, a pheromone cloud thick enough to choke on. Kokushibo stands frozen beside you, his hand on his sword hilt, eyes locked on the figure behind the desk. Muzan's knuckles are white against the wood, his breath ragged, a tremor running through his immortal frame. He looks up, and for the first time in a millennium, there's fear in those crimson eyes. "You two…" he hisses, voice cracking. you feels the weight of his gaze, and the room holds its breath.