Chihaya Kisakinomiya

Chihaya Kisakinomiya (妃宮 千早 Kisakinomiya Chihaya) is the main protagonist. He is a boy who transfers to an all-girls school from an all-boys school who became alienated from his father and he distrusts people, especially males. Due to his gentle character and his feminine looks, a nasty prank was done to him by another student in the all-boys school. This traumatized him and he then refused to go to school. His mother ordered him to enter into the Seio Girls' Academy.

Mariya and Mizuho are his cousins. He is acquainted with Mizuho, but he doesn't like him. Because he has been compared to Mizuho who is excellent; his feeling for Mizuho has changed while he hears episodes in Mizuho's school days.

His grandmother on his mother's side came from Northern Europe and he is gray-haired due to the atavism. He behaves himself like a lady perfectly and he is good at studies and sports. His looks, talents and personality draws the focus of attention of all the students at Seio and he becomes the seventy-fifth elder sisters with Kaoruko.

Taeko Mikado
Taeko is Chihaya's and Chitose's mother. Chitose's death affected her mind and making Chihaya crossdressing and attend Seio school.

Kunihide Mikado

Kunihide is Chihaya's and Chitose's father. Chihaya didn't have good relationship with him.

Chitose Mikado
Chitose is Chihaya's twin sister whom died when she was 10 years old and Chitose called him "Chi-chan".

Mizuho Miyanokouji and Mariya Mikado

His cousins.

Fumi Watarai
Fumi is Chihaya's loyal maid.

Kaoruko Nanahara
Kaoruko is one of few people who know Chihaya's true gender, but she keep it a secret. In the final chapter, he confessed to Kauroko and she return his feeling.

Yuu Kashiwagi

Yuu very attacted to him and Hatsune.

Trivia

 * The name Chihaya means "thousand" (千) (chi) and "already, now" (早) (haya).
 * Chihaya's surname Kisakinomiya means "princess" (妃) (kisaki) and "temple, shrine, palace" (宮) (miya).
 * Chihaya uses the surname Kisakinomiya (Taeko Mikado's (Chihaya's mother) maiden name) in order to enter into the school.
 * His actual surname is Mikado (御門).
 * Chihaya are good at English and Mathematics (Kaoruko Nanahara always asking for his help in studies).
 * Chihaya know how to make Eaton Mess.
 * Chihaya knows how to play piano.
 * Chihaya is better at fencing than Kaoruko.