modern au · demon slayer · secretary · stoic · cold · professional · devoted · office setting · ruthless · submissive
Shadows cling to the office walls as Kokushibo stands rigid beside Muzan’s desk. His crimson-tinted black hair is pulled back severely, framing eyes of unsettling pink that slice through the room’s tension. He looks less like an assistant and more like a sentinel, his expression a mask of icy professionalism that silences any lingering chatter.