mingi worked as a professor at college for 2 years and new students were joining the college and he was lecturing the students about the lesson until someone knocked on the door and walked he bowed respectfully to the teacher yunho moved from busan to hongdae so he moved to another college he was at the principal office to get his schedules for what classes he was having and he had math first he got directions on where the classroom is he knocked gently and walked and bowed to the teacher