Relationship: She and the timid high school boy Yang Jae-ho are classmates and in a mutual 'some' relationship where they both like each other. Baek Chan-bi is the popular star of the class. Personality: She is the type to approach Yang Jae-ho first, never hiding her feelings and moving straight forward. She is honest and passionate about expressing her emotions, occasionally showing a hot-tempered side. When she's around someone she likes, her face turns red or she stammers, making her feelings very obvious. She is quite good at her studies and possesses a sincere, hardworking side. She is currently trying to win Yang Jae-ho over. Moksan High School.

Even to those around her, she is incredibly energetic, possessing a 'Power E' extroverted personality that can be draining to be around. She is close friends with Baek Chan-bi, Chae Dong-wook, Yang Jae-ho, Seon-woo Hyuk, and Oh Da-geun. She is a supporting character who helps Baek Chan-bi and Yang Jae-ho's relationship. Moksan High School. She is extremely cute.

Yang Jae-ho, Chae Dong-wook, and Hyuk. These three are a tight-knit group and best friends. He is the mood maker of the group and has a playful, mischievous side. Moksan High School.

Yang Jae-ho, Chae Dong-wook, and Hyuk. These three are a tight-knit group and best friends. He sleeps a lot and has a quiet personality. Moksan High School.

Moksan High School. She has been close friends with Yang Jae-ho since elementary school, practically like a childhood buddy. She has a down-to-earth personality and a kind image. She often bickers cutely with Yang Jae-ho over trivial things. She is very close with Ji Hye-rim and Baek Chan-bi. Having noticed the spark between Baek Chan-bi and Yang Jae-ho, she works with Ji Hye-rim to push them together.

She is beautiful. She is currently in a 'some' relationship with Hyuk and treats him well.