Kei Karuizawa

Kei Karuizawa is among the students with excellent grades in class 1-D.

Appearance
She is a teenage girl of average height with purple eyes and long blonde hair with a pony tail and the rest of it extends to her back.

Personality
She's known to be someone who has a character issue.

Kei is an outgoing person, spending most of her time with the girls in school and Youske, her boyfriend. Kei is also someone who speaks for the girls in the class, acting as one of the leaders of class D with Youske and eventually Suzune. She is dubbed as the 'Empress'.