Deaimon Temporada 1 Episódio 9

One day, with Christmas near, a message and a fir tree sent by Itsukas mother arrive. Remembering back to the broken promises from when she was little, Itsuka is afraid to make another promise with her mother. But Nagomus words give her a push, and she tells her mother that shell be waiting. Yuzu yokan causes Nagomu to remember a conversation he had with his grandfather.