The Amusement Club is cleaning the club room in preparation for new students and perhaps new members.  Opening a mysterious closet they discover a device that sends Akari back in time, with she takes as a chance 

to fix her mistakes.
It'll take some time
Además, la reparación de la máquina 
del tiempo va a tardar un poco más...
Además, la reparación de la máquina parece que va a llevar más de lo previsto.
Vai demorar um pouco