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.
Thank you, Nishigaki-sensei.
Gracias, profesora Nishigaki.
Gracias, profesora Nishigaki.
Obrigada, Nishigaki-sensei.