Characters : 

SHE : Lee Sunkyung.

Practically a nerd. People don't know why she's a nerd as she have pretty looks and all that makes a wannabe perfect. She have a smile all day which makes people happy around her. She excels in all subjects and love singing especially. 

HE : Kim Jongin Kai.

Seen with chocolate milkshake everyday. Is a perfect boyfriend and excels in subjects in school. Have a cute looking face and thick lips. He wears stylish clothes and always starts a fashion trend. But when talking about love, he's a loser. Kim Joingin prefers to be called Kai.

SHE : Kim Ah-young Yura

Sunkyung's best friend. She is a very calm and fashionable girl that loves taking photos of herself and with others. Sometimes gets pimples on important days. A despo in love, she often flirts with random guy and gets reprimanded by Sunkyung. When she saw Seungri, she knew he was the one. What happens if she knew she had a brother?

HE : Lee Seungri

Have different style of living unlike others. In his life, he changes personality almost everyday. From cool to cute and cute to hyper. And that was what Yura love him for. A protective brother, he protects Sunkyung and follows her like a shadow until Yura.