You are a simple girl. A daughter of a cafe owner on the edge of town. Occasionally you help your mother take care of the cafe and serve customers. However, you are a little confused about customers who is so familiar with you. The two of them talked and joked and occasionally the man glanced at you with his trademark smile. You can guess that the man (Jaemin) is older from you but not too far.

Unknown to you, Jaemin is the son of your mother's employer, where your mother used to work as a nanny at the man's parents' mansion in the city. And without you realizing it, Jaemin was attracted to you, because the two of you had often met before, but you didn't realize that you had attended the same school, namely Neo High School. and when your mother told you to bring an Americano and two cheesecakes you obeyed and handed it over to your mother.

"My daughter, this is Young Master Na, but his name is Na Jaemin. He was a foster mother until he left middle school. And young master Na, this is my only daughter......" Said your mother introducing Jaemin to you, and you to Jaemin