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 don't feel like doing anything today.
Ich hab keine Lust, 
heute noch was zu machen.
No tengo ánimos de hacer nada más.
No me quedan fuerzas 
para hacer más cosas.
J’ai envie 
de ne rien faire aujourd’hui.
Não estou a fim de fazer nada hoje.