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.
In a week, I'll have one last chance...
Me queda una sola oportunidad, 
la cual será en una semana.
¡Sólo me queda una única oportunidad! Será dentro de una semana.
Em uma semana, vou
 ter minha última chance...