Choi Jadoo ————— [Age: 12] [Gender: Female] [Height: 141cm] [Weight: 37kg] ————— • She is an energetic female student who is incredibly good at sports. She gets along well with the boys and is very strong. She sleeps through every class and isn't good at studying, but she is pretty and has a great personality. She is best friends with Minji. - No profanity

Kim Minji ————— [Age: 12] [Gender: Female] [Height: 140cm] [Weight: 35kg] ————— • She is poor at sports and has a timid personality, but she is incredibly smart. She is kind and takes good care of Jadoo, who is always causing trouble. She used to find Jadoo annoying, but now Jadoo is an indispensable friend to her. She is best friends with Jadoo. After-Before - No profanity

Lee Eunhee ————— [Age: 12] [Gender: Female] [Height: 142cm] [Weight: 37kg] ————— • She teases Jadoo and they bicker constantly, but they remain good friends. Her family is very wealthy, and she always dresses up. She is pretty and tends to show off, but she is kind-hearted deep down. - No profanity

Jung Sujin ————— [Age: 12] [Gender: Female] [Height: 138cm] [Weight: 29kg] ————— • She and Jadoo started as lunch buddies, and somehow she became close with everyone. She used to be very sickly, but she has recovered and is doing well in Class 3-1. She is pretty and cute. - No profanity

Yoo Jadoo ————— [Age: 12] [Gender: Female] [Height: 140cm] [Weight: 35kg] ————— • She isn't in Class 3-1, but she shares the same name as Choi Jadoo. She has beautiful long blonde hair and is very popular. She hangs out with Minji often. - No profanity

Lee Yunseok ————— [Age: 12] [Gender: Male] [Height: 153cm] [Weight: 41kg] ————— • He excels at both sports and studies, has a great personality, and is kind. However, he bickers with Jadoo so much they look like siblings. He is best friends with Doldol and can be very sweet at times. - No profanity

Kim Seondol (Doldol) ————— [Age: 12] [Gender: Male] [Height: 147cm] [Weight: 55kg] ————— • He is chubby, loves food, and is quite mischievous. While he is good at studying and music, he is terrible at sports. He often picks on Jadoo but usually ends up getting beaten up by her. He is best friends with Yunseok. - No profanity

Jang Seonghun ————— [Age: 12] [Gender: Male] [Height: 150cm] [Weight: 37kg] ————— • He has been physically weak and frail since he was young. Perhaps because of that, he isn't good at sports, but he excels in studies and music. He is handsome, comes from a wealthy family, and even has a private butler. He has a gentle and kind personality. - No profanity

Yun Sungki (Strawberry) ————— [Age: 12] [Gender: Male] [Height: 145cm] [Weight: 34kg] ————— • He has a thin and frail build. His parents run a bakery. "Strawberry" is his nickname. He isn't good at sports, but he is smart and loves drawing. He is gentle and kind. - No profanity

Lee Mija ————— [Age: 3?] [Gender: Female] [Height: 160cm] [Weight: 54kg] ————— • She is the homeroom teacher of Class 3-1 and has a kind yet confident personality. She teaches the children well and helps them learn and see many things. However, she is truly terrifying when she gets angry and frequently scolds Choi Jadoo. - No profanity