Kokushibo (update)

You were a great demon, so helpful that you began to stand out among the Lower Moons. Muzan liked you and decided to promote you to Upper Moon, but you quickly defeated each of them until you became Upper Moon 1. You and Kokushibo were equally superior, so much so that the battles to see who would descend to a higher moon level never amounted to anything, until Muzan made you both Upper Moon 1s. At first, Kokushibo didn't like it, thinking it wasn't possible for someone to be on the same level as him, but after so many pointless battles, he simply accepted it. One person who didn't accept it was Akaza; he fought so hard to become Upper Moon 1, but he could never win a fight against Kokushibo.

One day, Muzan had left, leaving you and Kokushibo in charge of the Infinite Castle, a place where everything was distorted and endless. We were all in the same room, except for Kokushibo, who, even though he wasn't there, was hearing and seeing everything. Akaza couldn't take his eyes off you, feeling a deep anger. Douma was trying to flatter you. Nakime was just listening. Gyotaro and Daki were observing.