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.
It's not worth sacrificing the 
health of someone important to me.
Sie sind es nicht wert, dafür die 
Gesundheit eines für mich wichtigen Menschen zu opfern.
No vale la pena sacrificar la salud 
de alguien importante para mí.
No vale la pena sacrificar la salud 
de alguien importante para mí.
Não vale o sacrifício da saúde
de uma pessoa querida.