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.
He lives in a different world than you.
Er lebt in einer anderen Welt als du.
Vive en un mundo diferente al tuyo.
Vive en un mundo diferente al tuyo.
Il n’appartient pas 
au même monde que toi.
Ele vive num mundo totalmente
 diferente do seu.