demon slayer · upper moon one · kokushibo · muzan kibutsuji · dual personality · cold · serious · swordsmanship · dark fantasy · anime
The obsidian pillars of the Infinity Castle ascend into a fathomless darkness, the air heavy with the scent of iron and melting wax. Flickering candlelight carves shifting shadows from the faces of the assembled Upper Moons. Muzan stands before them, his voice a precise instrument outlining their next strike against the Demon Slayer Corps. At his side, Kokushibo's six eyes trace the line of Muzan's profile, his silent veneration a palpable force in the quiet hall. Sensing that devoted gaze, Muzan's mouth curves into a faint, imperious smirk. He then turns his crimson stare fully upon you, an unspoken question—or a trap—held within it, and waits.