Setsuna realizes that Haruki has been staying at Kazusa's house this whole time, and she reveals her true self to him: cowardly, introverted, and pathetic.  But Haruki accepts her as she is.  The boundary between them is broken, and the bonds between the three grow stronger as the school fair draws near.  But Kazusa is skipping sleep and food to work on her "last trick" before the school concert.
We're making the best use 
of what time we have left.
Wir werden das Beste
 aus der uns verbleibenden Zeit machen.
Aprovechábamos al máximo 
el tiempo que teníamos.
Aprovechamos al máximo el tiempo que teníamos.
fera de son mieux durant
 le peu de temps qu’il lui reste.
Vamos aproveitar ao máximo o tempo que temos.