Kei Karuizawa

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

She is situated in the second row, second seat from the left, next to her 'boyfriend', Yōsuke Hirata

Appearance
Kei is a teenage girl of average height with purple eyes and long blonde hair. While so, her hair is tied in a ponytail while the rest of it extends to her back.

Personality
Kei Karuizawa has been put in Class D due to a problem in her overall character.

Kei is an outgoing person, spending most of her time with the girls at school and Yōsuke Hirata, her 'boyfriend'. She is also someone who speaks for the girls in Class 1-D, acting as one of the leaders along with Yōsuke and eventually Suzune Horikita.

She seems to be slightly manipulative, as demonstrated when she convinced Kikyō Kushida to lend her some points after she used up her own.

Plot
In Episode 1, Kei Karuizawa, like the other first years, listened to the speech given by Manabu Horikita welcoming the first years to their new school. She was seen in D Class talking to Satsuki Shinohara before Yōsuke Hirata asked the class to introduce themselves, agreeing with the idea.

After Sae Chabashira had walked in and introduced to the class the system in which they are supposed to live in now, Kei was surprised at the fact that they received 100,000 points to begin with. The next day, when Kiyotaka Ayanokōji monologues how the class has been split into groups, she is seen talking with Maya Satō and Chiaki Matsushita about clothes and jewellery shopping after the classes that day.

At the start of the new month of May, along with the rest of Class D, Kei was surprised why they didn't receive the monthly allotment of points, looking depressed throughout the explanation of S-points and how Class D failed to keep any of their points

At the beginning of Episode 2, Kei was seen having fun the pool with her classmates, especially getting close to Yōsuke. Later on Kei is seen trying to get Kikyō to lend her points along with some other girls of the class to buy the 'essentials'.

Trivia

 * As Class D is a class for people with defective traits, her supposed defect is that she has a character issue.