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.
Explosions are necessary
 for invention!
¡En una invención la 
explosión es indispensble!
¡Toda invención que se precie tiene que tener explosiones!
Explosões são necessárias
 para invenções!