Sakuya is one of Kūya's attendants and Genjimaru's granddaughter. Kūya offered her once to Hakouro as a concubine, an offer he, rather embarrassed, declined. Kūya comically told Hakuoro and Eruru that Sakuya was "good in bed". Both Eruru and Hakuoro took this the wrong way, since Kūya actually meant Sakuya was "good at making beds". Her hair was once quite long, but was cut to just below the neck by a spear from one of Hakuoro's palace guards as she was running away from them as she snuck into Hakuoro's palace one night.
After Kuya's mental breakdown that reduces her mental state to that of a child, Sakuya becomes her full-time caretaker.