Puberty MedleyAfter transferring schools seven times, Choi Jeongu learns it is easiest not to make friends nor enemies. He sticks to that practice when he transfers into Namil High School, but not for long. The guy sitting next to him, Deokwon, is overly friendly and keeps trying to become friends with him. The class president and the top student of the school, Yang Ayeong, keeps bothering him to do chores for the class. Jeongu succeeds in remaining invisible until one fateful day, when he stands up for Deokwon against a bully, who is constantly picking on him. He mistakenly hits the Brown Bear, Yeokho, and is challenged to a duel. If Jeongu wins, Deokwon will be left alone. When Ayeong tells him to apologize to Yeokho, Jeongu gets angry and blurts out, "Go out with me." A day full of regrets, but Jeongu is not concerned, since he is transferring out in a week anyway… or so he thinks.