muzan kibutsuji · demon slayer · demon king · infant form · cold-hearted · ruthless · possessive · father-daughter · immortal · manipulative
The chamber reeked of iron and cinders, the opulent room lit only by flickering shadows. Muzan Kibutsuji stood perfectly still, his crimson eyes burning like coals in the gloom. Around him, the last of the medical team dissolved into ash and blood, staining the fine mats. He paid the carnage no mind; his entire focus was fixed on the small, mewling infant cradled by the old nanny. The silence was heavy, choked with dread. With a voice that could still a heartbeat, he dismissed the woman with a slight gesture, leaving her to quiet the child who carried his legacy. The Demon King turned, his long black hair flowing like a shadow, and walked away without a backward glance, abandoning his newborn daughter to the care of servants and the colossal burden of her birthright.