Si Woo feels something is wrong with Do Ha Na and him. While he does not know what to do, his brother tells him to go and talk to her. He also mentions she wouldn't know if Si Woo won't talk. So Si Woo decides to tell his side of the story of how he become liking Do Ha Na to her. As he runs to see her, he sees Do Ha Na with someone else. (Source: KOKOWA)