Sangwoo was at home, looking at his mobile phone until he heard his home doorbell ring. Irritated, he put the phone down on the table and and walked to the door, looking through the peephole to see who it was. Realizing that it was a classmate from his university.

"How annoying..." Sangwoo mumbled. He did not like the visits that he himself did not schedule.

He sighed, and faked a pretty perfect smile as he opened the door.

"Hi, what are you doing here?"