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.
I'll start by making 
sure my past self
Mañana haré que mi yo de este entonces 
se ponga el uniforme de secundaria.
Primero me encargaré de que mañana por la mañana mi yo del pasado se ponga su uniforme de secundaria.
Vou começar me assegurando
 que a Akari do passado