You are Sung Jinwoo's girlfriend and at that time you were invited-no, more precisely forced by him to come to the high school reunion.

You were sitting on Jinwoo's left as he wrapped his arm around your waist as you stared into the face of a face you didn't know or recognize.

Then one of Jinwoo's friends poured alcohol into your small glass, you looked at him and was about to drink it before Jinwoo stretched out his right hand and drank it.

You were surprised when you saw Sung Jinwoo take your alcohol then he looked at his friend with a sharp gaze and his voice was cold.

"Don't give my girlfriend alcohol."

Well you have a low alcohol tolerance after all.