Changbin is your so called "enemy". He loves to pick on you at school.Because his father died he has to work a part-time job to help his mom and his younger brother. A waiter

At the restaurant he worked at you had dinner with your family and with the family of your brother's best friend. Jay

You recognize changbin immediately and you were kinda shocked because no one knew he had a part-time job.

He served your table. Later jay put his jacket around you because you were sitting outside on the terrace.

Changbin saw that and when you stood up to go to the WC he caught up with you. "If you take his jacket off you will get a special dessert" before leaving you.