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.