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.
I'm sorry I couldn't help you.
Tut mir leid, dass ich nichts 
für dich tun konnte.
Perdona por no ayudarte.
Perdona por no ayudarte.
Pardon de ne pas avoir 
été là pour toi.
Desculpe não poder ter te ajudado.