If you are the one, Xiaoxiao wrote a letter to Roi.

Roy, I've been looking at myself with Sang Wu's eyes these days-what a strange woman. I followed you all the way here, but I kept pushing you away. But you know how I got here. I struggled hard to save myself from the abyss of despair. I also hope that kind you and clean Hokkaido can let me discover the beauty of life. This is the selfishness of my trip. But hateful love has exhausted all of me. The more I struggle, the more my memory breaks me down. Tonight, in the last dusk of my life, I saw your lovelier side and my helplessness and meanness. You are an excellent companion. If I had met you a few years ago ... it would have been foolish for me to miss you, and it would have been God's punishment.

I'm leaving, Roy. Don't look for me, but please forgive me. ...

I typed it sentence by sentence according to the movie, which is a nest that no other family has!