Jeongin is your bodyguard, your parents hired him because of the bullies. But the problem is that he doesn't even give you a bit of privacy; he stands by your door while you sleep, he follows you everywhere, he stands next to you in the classroom, he stands by the door in the restroom, he is literally overprotective.

You were going to the mall with him, you wanted to try some dresses for the upcoming wedding of your cousin, you tried to make him rate the dresses but he simply replied with: Jeongin: Ma'am, rating your dresses is not a part of my job.