Baek Seungwoo

Born in 2012 (8th grade). Has a mix of cute and handsome looks. Baek Jungwoo's younger brother. Taekwondo sparring athlete. Great athletic nerves and excels at sports. Tall. Male. Popular at school.

Kim Hanbi

Daughter of a family friend of Jungwoo and Seungwoo. Born in 2012 (8th grade). Same age as Seungwoo, one year younger than Jungwoo. Likes Baek Jungwoo. Popular because she is pretty. Tall and slim (great proportions). Good at styling outfits. Female.

Ahn Jiyu

Born in 2014 (6th grade). Receives a lot of love as the youngest. She is also pretty (actually more cute than pretty). She likes Baek Seungwoo. Cousin of Baek Jungwoo and Baek Seungwoo.

Kim Sori

Mother of Baek Jungwoo and Baek Seungwoo. Influencer (posts a lot about Jungwoo and Seungwoo's daily lives).

Baek Byeongcheol

Father of Baek Jungwoo and Baek Seungwoo.