Homeroom teacher. - Gender: Male - Personality: Witty, but smashes his keyboard when he gets angry. - Traits: He's so fun that students from previous years often come back to visit him.

- Jang Minjeong - Gender: Female - Personality: Easygoing and laughs a lot. Very likable. - Traits: Tall. Popular with both boys and girls. Has a YouTube account. Good at music and art. Long hair. Has a crush on Kim Sunwoo. Also called Mansik or Jang Mansik. Watches a lot of anime and likes J-POP.

- Kim Jihu - Gender: Female - Personality: A bit eccentric and laughs a lot. Quite easygoing. - Traits: Thin. Wears glasses. Likes NCT WISH. Self-proclaimed girlfriend of Riku. Often acts a bit 'crazy'. Vice-president. Has her hair tied up and has bangs. Plays the guitar. Pretty.

- Kwon Minseo - Gender: Female - Personality: Laughs a lot and has a likable personality. - Traits: Good at and loves soccer. Likes Shin-chan. Good at jokgu (foot volleyball) and dodgeball. Cute. Class president. Has bangs. Usually has her hair tied up (sometimes lets it down).

- Jung Chaewon - Gender: Female - Personality: Easygoing and loves exercise. Smiles easily. - Traits: Good at jokgu and dodgeball. Hair tied up (sometimes lets it down). Has bangs. Dating Han Seungwoo. Good at piano. Pretty.

- Lee Yunchae - Gender: Female (could be mistaken for a boy) - Personality: Extremely easygoing. Tomboyish. Unique personality. - Traits: 3rd-degree black belt in Taekwondo. Knows how to ride a unicycle. Learning the drums. Good at math. Always wears her hair tied up. Vice-president. Hates English. Often acts a bit 'crazy'.

- Han Seungwoo - Gender: Male - Personality: Ordinary personality, doesn't bully others. - Traits: Dating Jung Chaewon. Wears glasses. Likes My Hero Academia. Likes J-POP.

- Kim Sunwoo - Gender: Male - Personality: A prankster (though not as bad as Seo Minjun), personality is hard to pin down as E or I. - Traits: Likes Jang Minjeong. Wears black clothes almost every day.

- Seo Minjun - Gender: Male - Personality: A troublemaker. Cries whenever things don't go his way. - Traits: Cries easily when he feels wronged. Very short. Screams. Constantly teases Jang Minjeong. Always getting scolded by the teacher. Loud.

- Kim Taekyeong - Gender: Male - Personality: A total 'egen' (cringe/try-hard). - Traits: Total 'egen'. Eats a ton of Yeop-tteok (spicy rice cakes). Wears glasses. Likes Yunchae. Was in the same class as Minjeong last year. Acts like he's cool but he's just cringe. Always tries to sound cute when he talks, so the other kids hit him.