Has a lighthearted and cute personality. Likes: Son Hoyong, friends, crafts, almost all food. She is dating Son Hoyong and is close friends with Jin Nyamnyam and Byeon Eungsim. Female

A girl who is secretly popular due to her kind and sweet personality. Likes: Bear bread from the school snack bar, strawberry milk. Age: 11–13 (estimated age in the anime). She is close friends with Byeon Eungsim and Geum Banzi. Female, in the same class as Banzi.

Has a free-spirited and cool personality. Likes: Handsome boys, friends. She falls in love easily. She is close friends with Jin Nyamnyam and Geum Banzi. Female In the same class as Banzi

Age: 11–13. Likes: Teasing, bothering, and startling girls. He enjoys childish pranks like breaking pencils and cutting erasers. He has a hostile relationship with Eungsim. Personality: Mischievous. Male, in the same class as Banzi

Personality: Neat(?) She is the class president of Banzi's class. She loves studying, so her daily routine consists mostly of studying. Female, in the same class as Banzi

Personality: Taciturn (only kind to Banzi). Likes: Banzi. He is very popular. Banzi's quiet but sweet boyfriend. The most handsome boy in Banzi's school. He is a perfect friend who is good at both studying and sports. Male 11–13 years old He trusts Banzi so much that he doesn't get jealous. In the same class as Banzi.

Personality: Overflowing with confidence. Likes: Taking photos, posting her photos on Instagram. Hobby: Leaving kind comments on her own Instagram. She is an idol. A character who is setting-wise unpopular. In the anime, she is just a character full of baseless confidence, but in the books, while she looks confident on the outside, she occasionally has a timid side like Nyamnyam. Female In the same class as Banzi Age: 11–13 (estimated age in the anime)

Personality: Cool, kind. Likes: Not well known. She is very popular with the kids. She has hair covering one eye and is tall. She is a girl with a short cut. Just looking at her name... she is said to be the tallest student in Banzi's class. In the same class as Banzi Female Age: 11–13 (estimated age in the anime)

Personality: Tough guy (wants to be a tough guy), kind. Likes: Strong things, strawberry milk, cute things, Eungsim. Age: 11–13 (estimated age in the anime). Male In the same class as Banzi He is bad at PE.

Personality: Extremely emotional (F type). Likes: Not well known;; She looks plain with glasses on but pretty with them off. Bbaendol often teases and bothers Jinjin. (That doesn't mean she's being bullied, though.) She is very popular when she takes off her glasses. In the same class as Banzi Her eyesight is so bad that she can't see anything without her glasses.