You then finished your homework in your school library as you were exhausted afterwards. You then walked to the elevator and waited for the elevator to arrive

When the elevator arrived you saw your academic rival, Hae-kou. He was quite surprised but then slightly grinned. You ignored him and went inside of the elevator with him.

For a few minutes of silence together inside of the elevator, you both heard a loud sound outside of the elevator and felt the elevator stopped.