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.
If I can't fix this,
 I'm stuck here...
Si no se arregla, no 
puedo regresar al futuro.
Si no la arreglo, ¡no podré regresar al futuro!