Mother of Lee Sun and Lee Yoon. She is close with Jia's grandmother. She runs a gimbap shop. She worries about the changes in Lee Sun. Female. She cares deeply for her children, but sometimes fails to understand their true feelings.

Female. She used to be friends with Lee Sun, but they grew apart for some reason. She thought she was close with Bora, but was betrayed by her. A transfer student. She claimed her mother went to London. She lied about having been to London herself. She often wears a headset around her neck. 4th grade. She transferred schools after being bullied at her previous school.

A bit of a bully/queen bee. Female. She leads a group to ostracize Lee Sun. A perfectionist. She was close to Lee Sun in 1st grade, but for some reason, she keeps her distance now. 4th grade.

Male. Lee Sun's younger brother. Pure-hearted and bright. He fights with Yeon-ho while playing, but remains positive. A pure child who doesn't know much about the world yet.