One day, with Christmas near, a message and a fir tree sent by Itsuka's mother arrive. Remembering back to the broken promises from when she was little, Itsuka is afraid to make another promise with her mother. But Nagomu's words give her a push, and she tells her mother that she'll be waiting.
Yuzu yokan causes Nagomu to remember a conversation he had with his grandfather.
So, when I heard that your 
due date was the 22nd,
،لذا عندما سمعتُ بأنّ عيد ميلادك في الـ 22
Als ich erfahren habe, dass dein
Geburtstermin der 22. sein sollte,
Quand j’ai appris
que tu devais naître le 22 décembre,
Per questo, quando ho saputo 
che saresti nato il 22 dicembre,
Então, quando eu ouvi que o dia
que você ia nascer ia ser no dia 22,