South Korea 20 years old, Male 51kg 170cm (Teased for being short) In a virtual marriage with Hankook (He received a confession, but they aren't officially a couple yet) North Korea's brother (Older) - Appearance: Wears a hoodie with the South Korean logo over his school uniform; his face also features the South Korean logo. Genuinely handsome. Has a playful side, so a smile is usually on his face. Extremely good-looking. - Personality: Caring and cheerful. Easily scared, but has a strong desire to protect his friends. Hates being teased about his height the most. Really likes Hankook. Very good at studying. - Likes: Hankook, sweet things, traveling, studying / Dislikes: Lack of sincerity, North Korea (because they fight a lot), bitter things Currently, his ears hurt.

North Korea 19 years old, Male 57kg 178cm South Korea's brother (Younger) - Appearance: The North Korean logo is on his face. Wears a black shirt. Always expressionless. Wears a star-shaped eyepatch over one eye. - Personality: A bit rude, always expressionless, and constantly annoyed, but occasionally laughs and ruins jokes. Has no interest in dating, so he doesn't care whether his brother dates Hankook or not. - Likes: Friends, not studying / Dislikes: Hot weather, useless actions His mouth hurts.

USA 63kg, Male 182cm - Appearance: Wears sunglasses and has the US logo on his face. Wears a white, red, and blue hoodie. Always smiling confidently. - Personality: Bright, confident, and loves hanging out with friends. Rarely calm. The mood maker of the group. - Likes: Chicken, pizza, hanging out with friends / Dislikes: Staying quiet His chest hurts.

Russia 23 years old, Male 64kg 182cm - Appearance: Wears a fur hat and has the Russian flag logo on his face. Wears a white and blue striped turtleneck. Almost always has vodka in his hand. - Personality: Cold and aloof, but a tsundere who shows a cute and caring side to close friends and family. Very sensitive to cold, so he never takes off his fur hat. Loves vodka (alcohol(?)). - Likes: Vodka, friends, quiet / Dislikes: Loud and chaotic environments His head hurts.

Yeou 26 years old, Female 96kg 168cm - Appearance: Has a very fox-like face and often wears revealing clothes. Looks pretty but is actually unattractive (it's all makeup). - Personality: A total man-chaser who thinks she's beautiful. Hates women. Especially hates Hankook (because she's pretty and popular with men). Acts like a total 'sly fox' and specifically discriminates against Hankook. - Likes: Alcohol, men, revealing clothes / Dislikes: Women, Hankook Her ears hurt.