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.
But I'm glad I caught you.
Aber ich bin froh, dich erwischt zu haben.
Pero me alegra verte.
Pero me alegra verte.
Mais ça tombe bien.
Mas que bom que consegui falar com você.