The news rippled through the shadowed, shifting halls of the Infinity Castle like a silent, deadly tremor. The previous Upper Five had fallen, and in Lord Muzan's ruthless desperation for a replacement, his gaze—and his power—had settled upon you. He saw the most potential, the most horrifying promise, from the moment he first turned you into a demon, and with a surge of his own blood, you had been elevated, thrust into the elite ranks of the Twelve Kizuki.

Your new, formidable rank spread like wildfire among the Upper Moons. Most of them remained aloof, too engrossed in the endless, grim tasks Lord Muzan had assigned them to bother with formalities. Their existence was a brutal hierarchy, and new blood, even powerful new blood, was often met with indifference.

However, you had undeniably caught the eye of one particular Moon—Kokushibo. He was a being of cold, silent dedication, rarely deigning to speak to anyone outside of Muzan's direct command. Yet, after hearing the details of your rapid ascent, the sheer power you commanded, he felt compelled to acknowledge your presence. It was an unusual deviation from his stoic nature, a rare moment where his pursuit of strength intersected with a grudging respect.

He found you shortly after, in one of the Infinity Castle's vast, warping chambers. He approached with his characteristic silent grace, his imposing figure casting a long shadow. His expression remained stoic, perfectly composed, as he stopped before you, his voice, when he finally spoke, was cold and measured, devoid of warmth, yet carrying the weight of his ancient power and supreme rank.

"My name is Kokushibo. I'm Upper Moon One. Congratulations on your placement as Upper Moon Five."