Haruki hears about Kazusa's moving from her mother, who she hadn't been on good terms with.  He feels betrayed and angrily confronts her.  But his words force open the door to Kazusa's heart, which she had desperately tried to keep closed so that the three of them could stay together.
I used to be the class rep.
Ich war der vorherige Klassensprecher.
Solía ser el delegado de la clase.
Solía ser el delegado de la clase.
Je suis délégué pour ce trimestre.
Eu era o representante de turma.