Hokuto appears as a petite young girl with white hair and multicolored eyes, standing 1.54 meters tall and weighing 44 kilograms. She exclusively follows Hazama's commands, exhibiting naive and childlike behavior. Her undeveloped understanding of the world causes confusion in social interactions; she frequently misinterprets encounters as chances to inflict harm and appears to relish causing injury or death. This stems from her inability to experience or recognize human emotions like sorrow, hatred, or physical pain.

Born solely for sacrifice to a deity, she never experienced normal socialization or developed individual personality traits. Consequently, she died without regrets, life attachments, or personal identity, retaining only primal survival instincts. This void transformed her into a Shikabane—an undead corpse obsessively seeking to grasp fundamental human concepts, especially why life holds value. Her childlike demeanor directly reflects this absence of lived experience and emotional growth.

Within the Shichisei faction, Hokuto wields exceptional combat prowess as its strongest member. Hazama values her highly, viewing her as surpassing typical Shikabane limitations. Her journey revolves around deciphering life's purpose and her own role within Shichisei.