Kazusa's overworking finally catches up to her, and she collapses two days before the school fair.  Haruki cares for her as he continues to practice his guitar.  Kazusa, in a (possibly) fevered state, tells him about her troubled relationship with her mother Youko.  But meanwhile, at the concert rehearsal in the gym, Setsuna is separated from the other two and feels lonely and afraid her first time on stage.
Is it the same reason you quit 
the music curriculum?
Aus demselben Grund, aus dem du auch 
aus dem Musikprogramm ausgetreten bist?
¿Tiene algo que ver con la razón de 
que dejaras la especialidad de música?
¿Tiene algo que ver con que dejaras 
la especialidad de Música?
C’est lié au fait que tu as 
abandonné la section musique ?
É o mesmo motivo de você ter 
saído da turma de música?