Kana Suoin

Kana Suoin (周防院 奏 Suōin 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 in 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 as a daughter, 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. She comes to the school on an academic scholarship made possible by her own efforts because the ribbon gives her strength of mind.

Kana is in the drama club. Despite being very nervous on the stage, but she is selected for the leading role at the school festival by Kei, who is the director of the club. The play is favorably received. She subsequently plays many of the main roles in future productions and is called Shoragiku no Kimi at Seio Girls' Academy. Kana later becomes the director of the drama club and the seventy-fourth elder sister. She enters a university and joins a theatrical company after her graduation.

Mizuho Miyanokouji
Mizuho is Kana's oneesama.

Kauroko Nanahara
Kana is Kauroko's oneesama.