Minjung, the older sister who was the first love of Cheolsu. Chulsoo is drinking with Minjung who was about to get mixed. The two people who drank do the affair in Min-jung's house. After returning home, Chul-soo meets Young-hun, who was close with Min-jung. Young-hoon is dating his favorite Yuri. After seeing Chul-soo for a long time, I am excited to introduce Yuri. However, Yuri, who was not interested in Yeonghoon, feels crushed by her withdrawal. Young-hoon and Chul-soo are second. Young-hun...