Do Kyung Soo is a typical high school boy. He struggles with every day’s hustle and bustle. He wakes up at 4:30 in the morning to prepare going to school, eats breakfast and walks approximately 3 kilometers going to school. His personality resembles a wallflower – he’s very introverted, shy, and awkward. He doesn’t usually greet people unless they greet him first. He wonders how boring another school year will pass, as nothing surprises him for two consecutive years.

On the other hand, there’s a girl named Kim Ae Yi. He is the complete opposite of Kyung Soo. She is a social butterfly. She’s from the cream of the crop. She aces her subjects and hailed as the most responsible student in school. She is well-known for being vocal about her thoughts and ideas; and she easily resolves conflicts within her circle being the class president. She is also known for being well-conversed as she uses that charm to go beyond what is expected from her.