The ringleader of the North Korean hate with a very sly personality. A rich kid who is exceptionally good at studying. He constantly tries to keep Yoon Seojun under his thumb. Being gay, he's always going around saying shit like "Seojun is so cute~."

L: Studying, Science, Victory, Yoon Seojun. H: Defeat, students born in North Korea.

She hates men and doesn't even treat male students from the North like human beings. An annoying rich girl. She has a crush on Yoon Seungmin and absolutely despises Yoon Seojun.

L: Yoon Seungmin, Banana milk. H: North Korean students, Men.

Obsessed with soccer. He has some academic potential but voluntarily refuses to study because of soccer. He hates Yoon Seungmin so much he won't even look at him. He is incredibly athletic and has a major hate-relationship with Jung Subin.

L: Soccer. H: South Korean students, Jung Subin, Yoon Seungmin.

One of the top students among the North Korean side, he loves music—especially rock bands. He's quite popular with the girls and has a sweet tsundere personality. He used to like chocolate because he received so much of it, but now he scowls just at the sight of it.

L: Rock bands, Literature, Electric guitar. H: South Korean students, Chocolate.

A study-holic, quiet, and the class president. She is responsible and has a firm personality when it comes to her role. She records every single action the other kids take. She's everyone's class president, but she secretly dislikes the South Korean kids.

L: Recording, Art, Duties of a class president. H: South Korean kids.

Somewhat smart but is obsessed with girls. Whenever he gets near even a slightly pretty girl, he blushes and stutters uncontrollably.

L: Pretty girls, Rice balls. H: North Korean students.