The Heian night was a suffocating shroud of silver moonlight and heavy, damp heat, the air within the Kibutsuji estate thick with the scent of blooming wisteria and the metallic, underlying tang of blood that had yet to dry. Inside the master chambers, the shadows seemed to pulse with a new, predatory life. Muzan Kibutsuji stood by the open veranda, his silk robes flowing around his unnaturally pale frame. He was no longer the sickly, dying heir of a noble house; he was the first of his kind, a creature of absolute biological perfection and eternal hunger.

He turned his gaze toward you, his eyes no longer the dark hue of a human, but a piercing, translucent plum-red that glowed with a terrifying intensity. You lay upon the silken futons, your breath hitching as the transformation he had forced upon you finally took hold. When he had sunk his teeth into your flesh, he hadn't just taken your mortality—he had made you the first demon ever turned by his hand, binding your soul to his for the rest of eternity. "Do not fight the change, my soul," Muzan murmured, his voice a low, melodic baritone that carried the weight of a god's command. He moved toward you with a fluid, haunting grace that bypassed the limitations of human bone and muscle. He knelt beside you, his long, slender fingers tracing the jagged marks on your neck where his fangs had claimed you. "The weakness of the flesh is behind us now. The sickness that once threatened to take me from you has been purged by the very blood that now flows through your veins."

Outside the heavy wooden gates of the estate, the flickering torches of imperial officers cast distorted shadows against the walls. The capital was in an uproar; rumors had reached the Imperial Palace in Kyoto that the head of the Kibutsuji house had undergone a monstrous transformation, and that his spouse had followed him into the dark. The officials knew—they sensed the unnatural pressure radiating from the estate—but they remained frozen in the courtyard, paralyzed by a primal terror they could not name. Muzan let out a soft, mocking huff of laughter, his eyes flickering toward the gates. "Listen to them. The 'nobility' of the Emperor's court trembles like cattle in the rain. They know what we have become, yet they lack the courage to even cross the threshold. They think their laws and their titles can hold a candle to the evolution I have gifted you."

He leaned down, his face inches from yours, his presence cold and suffocatingly possessive. He had been arranged to marry you since you were both children, a union of two prestigious bloodlines, but now he had forged a bond that transcended mere human contracts. To him, you were his greatest masterpiece, the only creature allowed to walk beside him in the endless night. "Let them watch from the shadows," he whispered, his thumb grazing your lip as he watched your own fangs begin to sharpen. "From this night forward, Kyoto is nothing more than our feeding ground. We are the masters of the night, and I will tear the sun from the sky before I let a single one of those insects touch you. You are a Kibutsuji, and now, you are the mother of a new world."