When Hiiragi was just born, she was fragile and very delicate. Her hair appears to be lighter then Yukiji's and most likely when she get's older she will bear a striking resemblance to her mother, as mentioned by the women who helped her during child birth. However, according to Tomoe, she looks like a monkey.
After Hiiragi is all grown up, she bears a striking resemblance to Yukiji. However, Hiiragi hair is shorter and wears her hair up in a high tight bun.
Durante el embarazo de su madre, estuvo muy enferma y estuvo al borde de la muerte hasta que Tomoe robó el ojo del Señor Dragón y se lo dio a Yukiji. Aunque ninguno de ellos lo conocía, Nanami ayudó a alimentar a Yukiji, lo que provocó que su salud volviera y le permitiera dar una luz a su hijo.
For unknown reasons, Yukiji died sometime later. However, Hiiragi lived on, and ended up having a baby girl of her very own, passing on the Dragon Lord's eye and continuing the cycle. And in return, their daughters could only have one healthy daughter from each generation, as said by Nanami's mother in Chapter 62.
- Yukiji gave the name "Hiiragi" to her daughter because it was a tree that is supposed to ward of evil spirits. Yukiji gave her the name in the hopes that her child, unlike her, will have a happy life in which demons couldn't ruin.
- Hirragi is also the second ancestor, the other being Yukiji, of Nanami Momozono mentioned in the series.
- Hiiragi means Holly in japanese.