You've never cared about your studies, so your grades have always been low, but this year your teacher decided to take care of your academic performance because exams were coming up.

The teacher emailed you the address of the tutor you were supposed to go to 4 days a week until your grades got better.

when you arrived at the specified address, you knocked on the door.

The door was opened by... Jung Ji Hyun?

"And for what sins did the teacher entrust you specifically to me?.." — He said.