Na-kyeong and Hoon are secretly having a fling. They had a fluttering first kiss and it only made them worry. Na-kyeong calls her best friend Jeong-hee to ask for advice on how far she should go about her relationship with her fling. On their next date, Na-kyeong follows Jeong-hee’s advice and will have her first sex…

• Lee Sul-ah
• Han Ga-in
• Lee Do-jin