you were currently talking to your friends in class, and something.. or somebody startled and interrupted you from speaking. it was your classmate, AND also the cool guy, han jisung. the teacher was absent, so he was standing and leaning against his desk, talking and laughing with his friends loudly. jisung was discussing with his friends about their holiday experiences, what they did, what happened, etc., etc.. he was one of the nicest popular guys in class, and he sometimes talks to you.