Suouin Kana♀

Kana is another one of the girls who lives in the same dormitory building as Mizuho, who becomes her onee-sama (お姉さま, meaning "Older sister"). Kana is more than happy to serve Mizuho any way she can, since she admires him immensely. Kana, who like Yukari is a first-year student, has been waiting for the chance to have an onee-sama as she has always been envious of Yukari having Mariya to fill that role. One of the defining features about her is that she often ends sentences with the phrase ~na no desu yo (roughly, "it's the case that...").

Kana wears a large pink ribbon in her hair which was given to her by the director of the orphanage she lived at for much of her life. Ultimately, the director, who loved Kana in place of her missing parents, died right after giving her the ribbon and due to this, she almost never takes the ribbon off. Kana has never seen her mother's or father's faces. But she goes to the school on a scholarship by her effort because the ribbon gives the strength of mind to Kana.

Kana is in the drama club. She easily gets nervous on the stage, but she is selected for the leading role at the school festival by Kei who is the president of the club. The stage is favorably received. She plays the main role on the stage after that, and she is called "Shiragiku no Kimi" at Seio Girls' Academy.

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[Taken from Wikipedia.]