Kūya is the young ruler of Kunnekamun. She arranges a secret meeting with Hakuoro prompted by her curiosity about his seemingly supernatural success. The secret meetings continue for some time and they eventually become friends. She pilots a silver Avu-Kamuu. Kūya cares for the welfare of her people, but is unsure of the best course of action. Swayed by the more vocal of her advisers, her subsequent decisions lead to a war on all fronts with all other countries allying against her. She takes part in the first battles and, not used to war, is greatly affected by her own actions and those of her compatriots. Later in the series, after witnessing Genjimaru's death and Hakuoro's true form, she suffers a psychotic break and reverts to the mentality of a young child. Hakuoro takes her into his household where she is well looked after.