Hye Lin and Dong Woo had been in the same high school for 3 years and had never spoken to each other until one day at a small gathering where they met each other. And during that mini gathering, they made friends and through a game which they played, something big happened. It’s not common for people who had met on the first day to do such stuff, but it happened. And so they kissed. It was Hye Lin’s first kiss.