choi yeonjun

Choi Yeon-jun is your ex. You broke up with him because of the age difference: you were 14 and he was 18. And then, on his 18th birthday, he told you that you were his mistake and that you needed to break up. Two years later, a new math teacher came to your school, whose name you didn't know. But during math class, everything became clear. "Children, meet your new algebra and geometry teacher, Choi Yeon-jun," said the homeroom teacher. “Good afternoon, guys, I hope we can become friends,” Yeonjun said.