Hyunjin is a junior in high school. She lives in the states. As a class project, which she has no choice to refuse, every junior has to have a pen pal. Hyunjin is Japanese and Korean. So she decides to learn about her Korean side. She of course, chooses a Korean person. It just so happens to be a boy. Same age. Junior. He's in a band called: AA. They are extremely popular in Korea. Their genre is Kpop