She is in year 1 class 4 of Sakakino Gakuen, and one of Makoto's friends since junior high. She's in girl's basketball team, and also is the head of the group of girls who bullies Kotonoha. She has always had a crush on Makoto since junior high. Although she has feelings for Makoto ever since junior high, he does not seem to think of her romantically. While Kotonoha dates Makoto, Otome is extremely irritated and jealous when before, she thought the relationship was one-sided.
Tomoza's elder Sister and Namisa's Childhoodfiend. Her dreadfull power of Observation leaves nothing unnoticed. She is one of the only people who know that Tsukiko is a girl and Kou is a boy, and is determined to get Tsukiko to marry Tomoza.
A member of Kuroda's lacrosse club.
Nico's mother. It is implicit that she is an office worker and she raises her children alone with the help of Nico.
Principal Minami takes her job as chairwoman seriously and cares about Otonokizaka High School very much, but doesn't believe there's anything she can do to save it. She also cares a great deal about her daughter Kotori, as shown in episode 11 when she asks her if she's sure about her decision.
Sharpay Evans is queen of East High's theatre department, having starred in a total of 17 school productions. She has never quite forgiven newcomer Gabriella Montez and basketball star Troy Bolton for taking the lead roles from her and her twin brother Ryan Evans in the winter musicale. Sharpay's attempt at revenge failed over the summer, as she was taught a valuable lesson in friendship. Sharpay is very controlling. She dominates her brother and her peers. She is also very spoiled, demanding she have only the best things in life. Her favorite color is pink. She owns a pink convertable, pink golf cart and pink golf balls. She really fancies Troy Bolton. Zeke Baylor has a huge crush on her yet she doesn't really notice it. (Source: IMDb)