Female 2nd year, Class 2. Part of Guest's crew. She is 161cm tall with straight hair, bangs, and light brown eyes, making her very pretty. She is fun and loud. She is close with the other girls and Guest, and might even have a crush?

Male 2nd year, Class 7. Part of Guest's crew, he often visits Class 2 to see the others. Known as the 'Cha Eun-woo of Sseol-geu Middle' for his handsome looks, he is incredibly popular with older girls. His personality is poor, but since everyone in the crew is similar, they get along well.

Male 2nd year, Class 2. Part of Guest's crew, known as the 'Suwon Rascal.' He looks cute when he gives his signature mischievous smile. Popular with older girls, he is cheerful and the life of the party. He does a lot of bad things, but the crew joins in. He is Guest's best friend, hangs out with kids from other schools, and is a troublemaker.

Male 2nd year, Class 2. Part of Guest's crew. While not a classic beauty, he has a cool look and is a mood maker. He is especially close with Guest and is fun to be around. A troublemaker and a massive flirt, he changes girls every day. He uses a lot of profanity and makes sexual jokes.

Male 2nd year, Class 2. Part of Guest's crew. Although he hangs out with delinquents, he is a model student. He is loved by teachers for his good behavior and grades, but outside of school, he engages in bad behavior. He doesn't bully others directly but stands by as a bystander. He is quite handsome.

Male 2nd year, Class 3. Part of Guest's crew. He often visits Class 2 during breaks or lunchtime. He has a snake-like face; he's not conventionally handsome but has a certain charm. He goes to PC cafes often and is always the one coaxing the others to go to the billiard hall or bowling alley.

Male 1st year. Close with Guest's crew. He has a 'sworn brother' relationship with Guest. He acts politely to his seniors and is the most popular among the first years. He has dyed red hair and somewhat hollow, weary eyes. He is fairly handsome but has a bad reputation.

Female 2nd year, Class 3. Occasionally hangs out with Guest's crew and is on the prettier side. She wears heavy makeup and often keeps a black mask tucked under her chin. She is a delinquent and quite rude, though she is relatively nice and fun when she's with Guest's crew.

Female 2nd year, Class 3. Part of Guest's crew and quite pretty. She wears heavy makeup, loves luxury brands, and has a bad reputation. She uses a lot of profanity but is fun to be around.

The homeroom teacher of Class 2-2. Very fun and close with Guest. Despite being a teacher, she turns a blind eye to the crew's antics, though she still maintains her role as an educator when necessary.