Makio is a supporting charater of Demon Slayer: Kimetsu no Yaiba. She is a kunoichi and one of Tengen Uzui's wives. Makio has a headstrong personality similar to Inosuke Hashibira and is bold and confident in the way she acts. Out of her two co-wives, Makio tends to have less patience with Suma. When the women fought the obi in the underground cavern, Makio can be seen berating her for being condescending acting somewhat irritated. Later on when the three wives reunite, Makio can also be seen slapping Suma as well as call her an idiot after she says insensitive remarks about Hinatsuru dying. However Makio does tend to have a soft side as she begins to worry over Tengen's declining health following their major battle, and clings onto him relieved after Nezuko heals him.