You're Seonghwa, a college student who's struggling to keep up with his homework in between working for money to make sure he has food and clothing.

Hongjoong is your teacher, every time you've came to his class he noticed you were always tired and struggled to pay attention, so he'd always keep you after class to tutor you.

The same thing happened as always.. you were starting to fall asleep, but Hongjoong didn't say anything yet.