Know more about the characters:

Doyeon : A young girl who is in High School together with her childhood friend, Byun Baekhyun. She is in love with Baekhyun secretly without him knowing. Lives together with Bakehyun. Met a bestfriend named Hara, Chanyeol, Daehyun. Close with Baekhyun's brother, Sunggyu.

Baekhyun : Close with Doyeon. Grew up with her in one house. In love with her ever since he gets into the same High School as her. Gets jealous everytime he sees her with his brother. Parents died when he was young.  He knew that he was an adopted child.

Hara  : In love with Baekhyun ever since she gets to know him. But changed her mind when a transfer student transferred to their school and started to like him, named Daehyun. Closed with Doyeon

Chanyeol : Loves to play prank on people, especially on Doyeon. Loves to eat food.

Daehyun : Transfer student. In love with Hara. Loves cheesecakes the most and also other food.

Sunggyu : In love with Doyeon's sister, Gyuri. But her sister died due to car accident. Gets closed with Doyeon day by day, and started to like her. A teacher and a rich person due to his smartness.