Kanae is first introduced when Anthy decides to let Utena learn more about her life by meeting her brother Akio. Anthy does not appear to like Kanae very much, as they don't interact most of the time while Anthy and Utena are staying with Akio, and when they do, it is implied Anthy is jealous of Kanae's closeness to her brother. Near the end of the series, Kanae is shown unresponsive while being fed apples by Akio, which could imply that she has lost herself completely.
As a Black Rose DuellistEdit
Eventually, Kanae is lured into the seminar arranged by Souji Mikage. When she enters the confession booth, she sorrowfully and angrily admits that she despises Anthy, and feels as if Anthy is responsible for the sickness her father has contracted which left Akio in charge of Ohtori. Souji uses Kanae's anger to make Kanae a Black Rose Duellist. After challenging Utena to a duel, Kanae is defeated by the pink haired tomboy. After her defeat, Kanae seems to no longer hate Anthy, but she does not become any closer with her either, and aside from a short scene between the three, she does not appear again for the rest of the anime.