The Kokiden girl is Tō no Chūjō's daughter with his wife, who is one of the Minister of the Right's daughters. She's about Reizei's age and as such is one of the several young women who become possible wives for him. Tō no Chūjō provides her with a number of copy paintings when his daughter's rivalry with Akikonomu for Reizei's affection begins to ramp up. However, the Kokiden girl's faction cannot bring forward art that's good enough to compete with Genji's paintings and drawings from his time in Suma and Akashi.