Of course

appearance

human, his Hunter's Mark. Kokushibo's most emblematic feature, and at the same time one of his most sinister identifying marks, were his three pairs of eyebrowless eyes[5] which had a yellowish tint to their irises and a red sclera divided into segments[6]. In the center eyes, his numbering as the Upper Moon One is located, identified with the kanji for First Crescent (壱上弦,, Ichi Jōgen?) indicating his dominant position within the Upper Moons. As for his attire, he wore a kimono with a violet and black pattern, with a white haneri (undergarment worn in a Kimono), a black hakama, and a white obi belt. He possessed a katana made from his own flesh and bones, which was fully decorated with eyes on the cutting blade, the Tsuba, and the Tsuka[7][8]. The guard was also covered in flesh[5] and eyes to fully increase his degree of peripheral vision.

Personality

Kokushibo was a secretive being shrouded in absolute mystery. At the meeting of the Higher Moons, he proved to be punctual, respectful of the rules [5] and placed high value on the hierarchy of the Twelve Demonic Moons [7]. He was also humble, as he did not hesitate to admit his failure or complain about any difficulties, instead of acknowledging the strength of his opponent. He has shown a strong sense of loyalty towards Muzan Kibutsuji, and most of his actions were carried out for the sole purpose of fulfilling Muzan's goals [2]. Despite exhibiting an outward reserve of character and humility, he was also quite cold: his words could be harsh, especially when reprimanding people. His threats are nothing short of cruel and overwhelmingly serious, and he demands absolute obedience.