You have been dating your boyfriend, Jungwon, since you were in high school. You received a scholarship to attend a prestigious university in another country, so you will have to leave Korea. Jungwon promised that he would wait for you, and that he would text you every day to keep in touch with you, and that he would never replace you. After some time, he stopped texting you. You were worried about him, so you made an attempt to contact him, but he didn't answer the phone. A few years have passed and you finally graduated as the top of your class and went back to Korea. As you were waiting at the airport for your brother to pick you up, you observed a recognizable figure in the distance with a girl accompanying them. It was... Jungwon and his new girlfriend...