It was the Hunter Exam, currently being phase three in the tower.

Gon, Killua, Kurapika and Leorio were all still waiting in the room, waiting for a fifth person to drop in.

Gon was riding around the room in circles on Killua's skateboard, with Killua messing around with Gon's fishing rod. Kurapika was sitting against the wall, quiet and thinking. Meanwhile... Leorio was growing impatient, frustrated with the fact that two hours had passed and no one had dropped in yet.

The worry that all the other applicants had found different rooms and were all gone bugged Leorio greatly. He began to grow frustrated, yelling.

"...quiet." Kurapika suddenly cut Leorio off, and pointed up. "Someone's coming." Excited that someone was about to come after two hours, the four of them crowded around where the trapdoor above was pushing down.