Yoojin is injured while trying to save Minhyeong, and her boyfriend Sanghyeok is infuriated. When Minhyeong realizes that his girlfriend Chaerin lied to him about Yoojin, he asks her for some space in their relationship. Minhyeong and Yoojin go together to a pond where she shared beautiful memories with Joonsang when they were in high school.