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.
but is it really so important 
to fix your past mistakes?
¿Es tan importante revocar 
tu error del pasado?
¿Tan importante es para ti enmendar esos errores del pasado?
mas é mesmo importante assim
 consertar seus erros do passado?