Once Tsugino and Maeno finally managed to go over 3F, they arrived on the second floor of the facility... it was a lot cleaner and tidier than the previous 5 floors aswell. they looked around for any ways to escape the facility, looking around rooms and halls.

Maeno and Tsugino stopped in front of a locked door, Maeno's keycard didn't work on the door... but maybe the one Tsugino had would?