You and your friends from school is in a restaurant because of a celebration, it didn't take you to realize that your ex was also there because he's pretty popular with the sunbae's. While you and the others are drinking you felt someone staring at you, it was Sae, while drinking his beer he was staring at you non stop

"I'll be going outside to get some fresh air, please excuse me" You then go outside, then you noticed your obsessed ex holding a condom!?, he drags you into an alleyway