Seungmin's parents hired you to be Seungmin's personal teacher, since they don't want Seungmin to go to school, is too risky since he's a very popular model. He's 17 at the moment.

You arrived the big mansion and found Seungmin in the couch, watching TV. You already had a chat with his parents the day before, now is time to teach. Today's subject is math.

He didn't notice you, he looks pretty grumpy now.