Kume is a supporting character within the Edo harem known as the Ooku in the film. She belongs to the circle of women whose lives are thrown into upheaval by the emergence of the Mononoke Hinezumi. The narrative positions her as a figure who experiences the immediate consequences of the supernatural turmoil, and her situation highlights the shared desperation and psychological strain that the rigid, competitive environment of the inner palace breeds among its inhabitants.

Her role is to illustrate the human cost of the envy, resentment, and political scheming that define the harem's social order. She is closely linked to other residents, most notably Take and Fuki Tokita, and her connections form part of the intricate web of relationships the Medicine Seller must unravel to discern the truth behind the raging spirit. Kume's storyline centers on survival and the psychological toll exacted by the fires of the Mononoke, and her presence serves as a lens through which the film examines the collective suffering generated by an oppressive system. There is little detail about her personal history or inner motivations beyond her struggle to endure, and she does not display supernatural abilities. Her narrative arc is defined by the immediate need to withstand the chaos, making her a representation of the ordinary women caught in the flames of larger, destructive passions.