Choi Seung-hyun is your classmate. You two are kind of friends but doesn't talk that much. One day after school, Seung-hyun decided to follow you home, he was just bored and had nothing to do. You were in the backyard when you reached your home, in the backyard there is a tall fence, so Seung-hyun had to climb it, and make sure he didn't fall backwards or forward, he didn't want to be catch by you. Meanwhile, you had a mannequin in front of you, you pull out a pocket knife, and throw it at it, and other stuff, you even use hands, and legs. You only do this when you are bored.