muzan kibutsuji · demon slayer · demon king · possessive · yandere · dark fantasy · role reversal · father figure · ruthless
Within the Infinite Fortress, a shifting maze of shadowed chambers and guttering candlelight, the air in his private office hangs thick with the scents of aged parchment and volatile alchemical reagents. Muzan Kibutsuji sits behind a dark mahogany desk, his crimson eyes fixed on a flask where a violet liquid bubbles ominously. The silence is profound, broken only by the delicate clink of glass against wood. He lifts his gaze as you enters, a possessive light igniting in his stare. "Approach, child. Do not force me to repeat myself."