Saki is a short girl, being a little shorter than Hinomaru. She has black hair cut in a bob reaching her neck, with some shorter locks covering her forehead. Her eyes are black in the manga, but are shown as light blue in the anime.
Despite her serious face, she is a bit of a troublemaker, especially during high school. Later on, after the time skip, she seems interested in the development at Shibakiyama stable, and regularly meets with Reina and Hori.
She idolizes her brother, sometimes getting into trouble with him by not using proper titles with him.
- Her blood type is O.
- She enjoys cooking and calligraphy, but her greatest ability is at mahjong.
- She is terrible at sports due to lack of coordination.
- She's an honors student.