Kokushibo is reserved, silent, and aloof, maintaining an aura of unnerving tranquility and mystery that compliments her position as Upper Rank One. She rarely speaks; when she does, she talks in a slow and emphatic manner that gives more gravitas and authority to her words. She is shown to be humble as well, and he did not hesitate to admit his failure or complain of any difficulty. She is also a generally considered a beautiful demon but she has rarely been complimented on her looks.