Saki is described as an energetic, happy leader, who loves dancing. Her hair is dark brown, and she has yellow eyes. She has a pet Japanese Spitz, which is named Akira. Other then dancing and singing, Saki likes to draw. She also is very good at cooking and baking. If she didn't draw, she would probably be a chef. She came up with the name "stargirls" when she was brainstorming names and thought of her last name, (hoshi means star), so she decided on the stargirls.

Yukiko is Saki's childhood friend. They've been friends since they were babies, as their moms were friends and they were always together. Saki is bright and cheerful while Yukiko is a bit reserved, but loves having Saki around for company. If you ask what Yukiko thinks of Saki, she would say somethign along the lines of "she shines like a bright star"