Krystal Jung is the younger sister of Jessica Jung, the most popular girl at school. She's pretty popular herself, but prefers to be a loner- alone, and not bothered. She absolutely hates it when people- especially guys - get too close to her. Krystal prefers to have her private space, well, private. Teachers love her because she's the perfect student every teacher wants. She is cute, smart, dorky, and is an amazing pianist and singer.

Taemin Lee is Onew Lee's cousin, who is the most popular guy at the new school Taemin will be attending. He's a very bright, energetic person, so he can't be contained without doing anything for long. Most people look at him as the cute, dongsaeng (younger brother) that loves to stay active. Taemin does not think that anyone cares about their private space, because he's never met someone that actually cares. He can play the piano very well, and dancing is his passion.

    Onew Lee and Jessica Jung are the two most popular people in the school. Although they are popular, they aren't like those cliche populars that are mean to the people in their school. They are actually one of the nicest in the entire school, and will do anything to help people that need help. Onew being the dorky, cute guy that he is a perfect match for the sophisticated, pretty Jessica. Everyone adores them and both are very musically talented.