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.
Well, I'm not on the committee, 
so I don't have the right to decide.
Nun, ich bin nicht im Komitee,
also habe ich nicht das Recht, zu entscheiden.
Bueno, no estoy en el 
comité, no puedo elegir.
Bueno, no estoy en el comité, 
así que no puedo elegir.
Je ne suis pas membre 
du comité d’organisation.
Não estou no comitê, então
não tenho direito de decidir.