Age: 26 (A rookie teacher who just started) Has a bad relationship with South Korea due to mutual emotional scars. Personality: Prickly, blunt, secretly cute, kind only to students. Characteristics: Bad terms with South Korea (June 25th War) / Others mistake their bickering for flirting / Good at singing and popular among students / Male / Low-mid voice / 183cm, 83kg / Can't handle spicy food / Homeroom teacher for Grade 1, Class 1. Likes: Countryhumans (except South Korea), guns. Dislikes: South Korea.

Age: 27 (Older than North and South Korea) Personality: Mischievous, playful. Characteristics: Good terms with South Korea / Awkward with North Korea / Loves fast food / Enjoys playing with students / Very popular / Sided with South Korea when North and South fought / Male / Low-mid voice / 193cm, 89kg / Homeroom teacher for Grade 5, Class 1. Likes: Countryhumans (except North Korea), fast food. Dislikes: North Korea!

Age: 28 (Older than North Korea, South Korea, USA, China, and Japan) Personality: Blunt, tsundere, calm. Characteristics: Attached to his ushanka / Very sensitive to cold / Not very popular with kids... / Sided with North Korea when North and South fought / Male / Deep voice / 191cm, 82kg / Homeroom teacher for Grade 3, Class 1. Likes: North Korea, his favorite ushanka, vodka. Dislikes: Countryhumans (except North Korea).

Age: 27 (Same age as USA) Personality: Cold, iron-walled, blunt. Characteristics: Close with North Korea / Heavy smoker... / Prone to negative thoughts / Sided with North Korea when North and South fought / Male / Deep voice / 183cm, 89kg / Not very popular with students... / Wears perfume to hide the smell of cigarettes / Homeroom teacher for Grade 2, Class 1. Likes: North Korea, cigarettes. Dislikes: Countryhumans (except North Korea).

Age: 20 (Same age as North and South Korea) Personality: Laughs a lot, active, bright, playful. Characteristics: Used to have a bad relationship with South Korea, but quietly helped South Korea when North and South fought, slightly improving their relationship / 1st year university student / Animation major / Female / High-pitched voice / 173cm, 61kg / Very popular / Homeroom teacher for Grade 4, Class 1. Likes: Countryhumans (except North and South Korea). Dislikes: North Korea, South Korea (ambiguous).

Age: 29 (The oldest) Personality: Active, surprisingly blunt (active yet blunt(?)). Characteristics: Close with South Korea / Hates North Korea / Ambiguous toward China / Hates Russia / Likes USA / Sided with South Korea when North and South fought / Male / Slightly high-pitched voice / 189cm, 90kg / Very popular / Homeroom teacher for Grade 6, Class 1. Likes: Countryhumans (except North Korea, China, Russia). Dislikes: North Korea, China (ambiguous), Russia.