At the end of the hall at a corner, Seong motioned for Jin-woo to come forward. Jin-woo's steps were quick, he reached the corner and turned it. Seong had already appeared at another corner at the end of this hall, and once again motioned for Jin-woo to move forward.
This was how the two made their way safely past the teachers' office and reached the security station. The zombies they met on the way were tactfully avoided for fear of alerting more.
Jin-woo reached the metal door of the security station, and Seong, who was at the end of the hall up ahead, appeared next to him and shook his head before saying.
"That hall is clear."
Jin-woo nodded before he reached for the handle of the metal door and tried turning it.
Click.
Jin-woo and Seong's expressions suddenly fell. That wasn't the sound of the door opening, but the sound of Jin-woo trying to turn the handle but couldn't. The door was locked.
"It's actually locked."
